• python之函数


    第一:函数的定义

    使用函数的背景:

      现在领导让你把公司加上机器的监控与报警信息做一下统计,防止遗漏监控,连接数据库代码:

    def get_host():
        创建数据库连接
        通过cursor方法获取游标
        通过execute对sql进行操作
        关闭游标
    
    def get_item():
        创建数据库连接
        通过cursor方法获取游标
        通过execute对sql进行操作
        关闭游标
    
    def get_tirggers():
        创建数据库连接
        通过cursor方法获取游标
        通过execute对sql进行操作
        关闭游标

    完全可以按照上面的方式操作数据库,但是这样写存在两个问题:

      1.代码重复过多

      2.如果日后要更改操作数据库,比较麻烦

    def con_sql(sql):
        创建数据库连接
        通过cursor方法获取游标
        通过execute对sql进行操作
        关闭游标
    
    def get_host(host):
        conn_sql(host)
    
    def get_item(item):
        conn_sql(item)
    
    def get_tirggers(triggers):
        conn_sql(triggers)

    这样写可以体现出函数的好处:

      1.解决了代码重用的问题

      2.保持代码一致性,易维护

      3.容易扩展

    在此处提下函数式编程和面向过程编程的区别:

    • 函数式:将某功能代码封装到函数中,日后便无需重复编写,仅调用函数即可
    • 面向对象:对函数进行分类和封装,让开发“更快更好更强...”

    函数的定义及各部分详解:

    def test(x):
        '''
        :param x:传入参数是干啥的呀
        :return: 返回的是啥呀
        '''
        x+=1
        return x
    
    test(4)
    
    def:定义函数的关键字
    test:函数名
    ():括号内可以定义形参
    """ """:函数描述(建议写上)
    x+=1:函数的逻辑程序
    return : 定义返回值
    test(4) : 函数名(参数): 调用运行,这里的x可以带参数,也可以不带的

    第二:函数的三种定义方式

    无参函数定义:

    def hello():
        print("hello world")
    
    #调用也不需要传参
    hello()
    
    #输出结果:
    hello world

    有参函数定义:

    def hello(x,y):
        print("hello world",x,y)
    
    #调用也不需要传参
    hello("zzl","cyy")
    
    #输出结果:
    hello world zzl cyy

    空函数定义:

    def foo():
        '''
        :return: 
        '''
        pass
    
    foo()

    空函数写不写参数是无所谓的,空函数主要用于开发大的程序的时候定义

    空函数的好处是:

    1.理清逻辑

    2.哪一个模块有灵感就写哪一个模块

    3.当你与你同事共同开发的该程序,你同事没有完成,你可以做一个判断,不影响你的工作

    第三:函数的返回值

    返回0个值---》None

    def foo():
        return
        
    print(foo())
    
    返回结果:
    None

    返回一个值---》返回的是return后定义的哪一个值

    def foo():
        return "hello world"
    
    print(foo())
    返回结果:
    hello world

    返回多个值---》返回的是一个元组

    def foo():
        return 1,2
    
    print(foo())
    返回结果:
    (1, 2)

    返回值可以是任何类型

    def foo():
        return 1,2,[3,4]
    
    print(foo())
    返回结果:
    (1, 2, [3, 4])

    第四:函数三种调用方式

    作为语句形式的调用

    def my_max(x,y):
        return x if x > y else y
    #语句形式:用于没有返回值的形式
    
    my_max(1,2)

    作为表达式形式的调用

    def my_max(x,y):
        return x if x > y else y
    #表达式形式
    res=my_max(1,2)
    print(res)
    
    结果:
    2

    作为参数形式的调用

    def my_max(x,y):
        return x if x > y else y
    
    res=my_max(20,my_max(11,18))
    print(res)
    
    结果:
    20

    第五:函数的形参与实参

    #形式参数:x,y,形式参数不占用内存空间,只有真正传值得时候才占用内存空间
    def foo(x,y):
        print(x)
        print(y)
    
    #实际参数1,2,实际参数是真正占用内存空间的
    foo(1,2)
    
    #注:在python中,名字没有任何储值的功能,任何的储值都是绑定一个名字到一个值
    def foo(x,y):
        return x+y
    
    #实际参数1,2,实际参数是真正占用内存空间的
    foo(1,2)
    
    #注:在python中,名字没有任何储值的功能,任何的储值都是绑定一个名字到一个值
    
    #参数的动态性:
    print(foo(1,2))
    #结果:3
    print(foo('a','b'))
    #结果:ab
    print(foo(1,'a'))
    #报错了
    TypeError: unsupported operand type(s) for +: 'int' and 'str'

    怎么解决这样的问题?

    有一下三种方式:

    第一种:加上帮助信息,这样其他人用函数的时候,就知道怎么去调用了,但是不能真正的对函数做到限定作用
    
    def foo(x,y):
        '''
        :param x:int
        :param y:int
        :return:int
        '''
        return x+y
    
    print(help(foo))
    
    foo(x, y)
        :param x:int
        :param y:int
        :return:int
    
    第二种:
    def foo(x,y):
        if type(x) is int and type(y) is int: #给核心功能附加程序
            return x+y
    
    print(foo(1,2))
    
    第三种:更加妖娆:
    def foo(x:int,y:int)->int:
        return x+y
    print(foo.__annotations__)
    print(foo(1,2))
    
    结果:
    {'x': <class 'int'>, 'y': <class 'int'>, 'return': <class 'int'>}
    3
    
    综合以上三种方式:用第一种方式,最后在加上异常处理为标志用法,其他两种也可以用,凭自己个人感觉哈

    参数的具体使用:

    实参应用:

    按位置传值:

    # 实参:
    def foo(x,y):
        print(x)
        print(y)
    # 按位置传值
    foo(4,5)
    
    结果:
    4
    5

    按关键字传值:

    def foo(x,y):
        print(x)
        print(y)
    # 按关键字传值
    foo(y=8,x=6)
    
    结果
    6
    8

    注意问题:

    1.针对同一个形参,你可以按照位置或者按照关键字传值,但是只能用一种方式,不能给同一个形式参数传值

    2.按关键字传值,必须在按位置传值右边

    形参具体使用:

    位置参数:

    def foo(x,y,z):
        print(x)
        print(y)
        print(z)
    #位置参数:必须传值
    foo(1,2,3)
    
    输出结果:
    1
    2
    3

    默认参数:

    #默认参数
    def foo(x,y=6):
        print(x)
        print(y)
    foo(1)
    foo(1,8)
    foo(x=1,y=10)
    
    结果:
    1
    6
    
    1
    8
    
    1
    10
    
    注意:默认参数可以不传值,但是也可以传值,传值得话,会覆盖默认参数的值,也可以按照关键字的方式传值。
    
    默认参数的用途:
    
    比如:我们部门男人很多
    1.变化比较小的定义为默认参数
    2.默认参数必须在位置参数和的右边
    3.默认参数一定要定义成一个不可变的类型
    4.默认参数在定义的时候已经被赋予了一个明确的值了,后期变化对其无效
    验证1,2
    def registor(user,age,gender='male'):
        print(user)
        print(age)
        print(gender)
    
    registor('zzl',18)
    
    结果:
    zzl
    18
    male
    
    验证3:
    def foo(x,l=[]):
        l.append(x)
        return l
    
    print(foo(1))
    print(foo(2))
    print(foo(3))
    
    结果:
    [1]
    [1, 2]
    [1, 2, 3]
    他们每一次调用都指向同一块内存地址
    
    验证4:
    name='lxh'
    def foo(x,y=name):
        print(x)
        print(y)
    name='xhb'
    print(foo(1))

    默认参数的好处:

    1.降低了函数调用的复杂度

    2.可用来扩展函数功能

    *args可变参数

    •  *的作用是‘监听’位置参数,*args等待接收的参数必须是安位置来的
    •  凡是遇到带*的参数,那么我们就把它看作是位置参数,把它打散了来看
    基本形式:
    def func(name,age,*args):
        print(name)
        print(age)
        print(args)
    
    func('cy',18,'student')
    
    输出结果:
    cy
    18
    ('student',)
    
    如果要求传入的参数为列表的情况
    def func(name,age,*args):
        print(name)
        print(age)
        print(args)
    
    func('cy','18',*['student','lawyer'])
    结果输出:
    cy
    18
    ('student', 'lawyer')

    **kwargs关键字参数

    基本形式
    def foo(x,y,**kwargs):
        print(x)
        print(y)
        print(kwargs)
    
    foo(1,l=2,y=3,z=1,c=2)
    
    结果输出:
    1
    3
    {'l': 2, 'z': 1, 'c': 2}
    
    传入的参数为字典
    def foo(x,y,z):
        print(x)
        print(y)
        print(z)
    
    foo(**{'x':1,'z':3,'y':2}) # foo(x=1,z=3,y=2)
    
    结果输出:
    1
    2
    3
    
    结合*args
    def foo(x,y,*args,**kwargs):
        print(x)
        print(y)
        print(args)
        print(kwargs)
    
    foo(1,3,*[6,8,9],c=10,l=12)
    
    #输出结果:
    1
    3
    (6, 8, 9)
    {'c': 10, 'l': 12}

    总结:以上四种参数的顺序:位置参数,*args,默认参数,**kwargs

    第六:局部变量与全局变量

    在子程序中定义的变量称为局部变量,在程序的一开始定义的变量称为全局变量。
    全局变量作用域是整个程序,局部变量作用域是定义该变量的子程序。
    当全局变量与局部变量重名时:在定义局部变量的子程序内,局部变量起作用;在其它地方全局变量起作用。
     1 全局变量
     2 msg='hello world'
     3 
     4 def foo():
     5     print(msg)
     6 
     7 foo()
     8 
     9 输出结果:
    10 hello world
    11 
    12 局部变量
    13 def foo():
    14     msg='hello world'
    15     print(msg)
    16 foo()
    17 
    18 输出结果:
    19 hello world
    20 
    21 msg='hello msg'
    22 def foo():
    23     msg='hello world'
    24     print(msg)
    25 foo()
    26 print(msg)
    27 
    28 输出结果:
    29 hello world
    30 hello msg
    31 
    32 msg='hello msg'
    33 def foo():
    34     global msg #定义的是全局变量
    35     msg='hello world'
    36     print(msg)
    37 foo()
    38 print(msg)
    39 
    40 #输出结果:
    41 hello world
    42 hello world

    第七:函数的递归

    在函数内部,可以调用其他函数。如果一个函数在内部调用自己本省,这个函数就叫递归函数。

    列举两个递归查询的例子

     1 def foo(n):
     2     print(n)
     3     if int(n/2) == 0:
     4         return n
     5     return foo(int(n/2))
     6 
     7 foo(20)
     8 
     9 输出结果:
    10 20
    11 10
    12 5
    13 2
    14 1
    15 
    16 def fact(n):
    17     print(n)
    18     if n == 1:
    19         return 1
    20     return n * fact(n - 1)
    21 
    22 fact(6)
    23 输出结果:
    24 6
    25 5
    26 4
    27 3
    28 2
    29 1

    1. 必须有一个明确的结束条件

    2. 每次进入更深一层递归时,问题规模相比上次递归都应有所减少

    3. 递归效率不高,递归层次过多会导致栈溢出(在计算机中,函数调用是通过栈(stack)这种数据结构实现的,每当进入一个函数调用,栈就会加一层栈帧,每当函数返回,栈就会减一层栈帧。由于栈的大小不是无限的,所以,递归调用的次数过多,会导致栈溢出)

    栈溢出示例:

    def fact(n):
        print(n)
        if n == 1:
            return 1
        return n * fact(n - 1)
    
    fact(1000)
    
    输出结果:
    C:Python35python3.5.exe D:/pytnon/python/函数/函数.py
    1000
    999
    998
    997
    996
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    3Traceback (most recent call last):
      File "D:/pytnon/python/函数/函数.py", line 219, in <module>
        fact(1000)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 217, in fact
        return n * fact(n - 1)
      File "D:/pytnon/python/函数/函数.py", line 214, in fact
        print(n)
    RecursionError: maximum recursion depth exceeded while calling a Python object
    
    Process finished with exit code 1
    View Code

    怎样解决这样的问题?

    解决递归调用栈溢出的方法是通过尾递归优化,尾递归和循环的效果是一样的,所以,把循环看成是一种特殊的尾递归函数也是可以的

    尾递归是指,在函数返回的时候,调用自身本身,并且,return语句不能包含表达式。这样,编译器或者解释器就可以把尾递归做优化,使递归本身无论调用多少次,都只占用一个栈帧,不会出现栈溢出的情况 ,后续详解,尾调用与尾递归

    第八:嵌套函数

    函数的嵌套通俗的理解为函数套函数就ok了

    函数嵌套的定义:

    1 def func1():
    2     def func2():
    3         print("my name is func2")
    4     func2()
    5 func1()
    6 
    7 #输出结果:
    8 my name is func2

    函数嵌套的调用:

    def my_max1(x,y):
        return x if x > y else y
    
    def my_max2(a, b, c, d):
        return my_max1(my_max1(my_max1(a,b),c),d)
    
    print(my_max2(100,200,80,120))
    
    输出结果:
    200
    #结合嵌套函数再看全局变量,与局部变量
    msg='zzl'
    def func1():
        msg='cyy'
        def func2():
            msg='cy'
            def func3():
                print(msg)
            return func3
        return func2
    
    func1()()()
    
    输出结果:
    cy

    第九:函数是第一类对象

    在python中所有的名字都没有储值功能

    函数是第一类对象指的是:函数可以被当做数据来处理

    被引用

    def foo():
        print("cyy")
    f1=foo
    f1()
    # 输出结果:
    cyy

    可以当做参数

    def foo():
        print("cyy")
    
    def func(msg):
        print(msg)
        msg()
    
    func(foo)
    输出结果:
    <function foo at 0x00000000020D3E18>
    cyy

    可以当做返回值

    def foo():
        print("cyy")
    
    def func(msg):
        return msg
    
    f=func(foo)
    print(f)
    f()
    输出结果:
    <function foo at 0x0000000002423E18>
    cyy

    可以当做容器类型的一个元素

    def foo():
        print("cyy")
    
    func_dic={
        'foo':foo
    }
    num=func_dic['foo']
    num()
    输出结果: cyy

    第十:匿名函数

    匿名函数就是不需要显式的指定函数

    1.lambda

    def calc(n):
        return n**n
    print(calc(10))
    
    #换成匿名函数
    calc = lambda n:n**n
    print(calc(10))
    
    # 输出结果:
    # 10000000000
    # 10000000000

    2.map结合lambda

    l=[3,2,100,999,213,1111,31121,333]
    print(max(l))
    
    dic={'k1':10,'k2':100,'k3':30}
    
    print(max(dic))
    print(dic[max(dic,key=lambda k:dic[k])])
    输出结果:
    31121
    k3
    100

     总结:

    #当然了,map,filter,reduce,可以处理所有数据类型
    
    name_dic=[
        {'name':'zzl','age':1000},
        {'name':'cyy','age':10000},
        {'name':'zl','age':9000},
        {'name':'cy','age':18},
    ]
    #利用filter过滤掉1000,10000,9000
    def func(x):
        age_list=[1000,10000,9000]
        return x['age'] not in age_list
    
    
    res=filter(func,name_dic)
    for i in res:
        print(i)
    
    res=filter(lambda x:x['age'] == 18,name_dic)
    for i in res:
        print(i)
    
    
    #reduce用来计算1到100的和
    from functools import reduce
    print(reduce(lambda x,y:x+y,range(100),100))
    print(reduce(lambda x,y:x+y,range(1,101)))
    
    #用map来处理字符串列表啊,把列表中所有人都变成success,比方zzl_success
    name=['zzl','cyy','zl']
    
    res=map(lambda x:x+'_success',name)
    for i in res:
        print(i)

    输出结果:

    {'age': 18, 'name': 'cy'}
    {'age': 18, 'name': 'cy'}
    5050
    5050
    zzl_success
    cyy_success
    zl_success

    第十一:高阶函数

    满足一下一个特性都可称为高阶函数

      把一个函数的内存地址当做一个参数传到另一个函数

      函数的返回值是一个函数名

    def add(x,y,f):
       print(f(x)+f(y))
    
    add(-5,9,abs)
    输出结果:
    14

    第十二:内置函数介绍

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  • 原文地址:https://www.cnblogs.com/ylqh/p/6417684.html
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