python_day02

分支结构与循环结构

#username = input('user:')

#password = input('passward')

#if username == 'admin' and password == '123':

# print('Login')

#else:

# print('error')

#注册，必须含有大写、数字、小写

# user = input('请输入用户名：')

# passwd = input('请输入密码：')

# daxie = 'ABCDEFGHIGKLMNOPQRSTUVWXYZ'

# xiaoxie = 'abcdefghijklmnopqrstuvwxyz'

# shuzi = '1230456789'

# count1, count2,count3=False,False,False

# count==0

# for i in passwd:

 

# if i in daxie:

# count1 = True

# if i in xiaoxie:

# count2 = True

# if i in shuzi:

# count3 = True

# if count1 and count2 and count3:

# print('成功')

# else:

# print('必须含有字母大小写和数字')

#

# x = int(input())

# if x>1:

# y = 3 * x - 5

# elif x >= -1:

# y = x + 2

# else:

# y = x * 5 + 3

# print(y)

#计算器

# a = int(input())

# f = input()

# b = int(input())

# if f == '+':

# h = a + b

# elif f == '-':

# h = a - b

# elif f == '*':

# h = a * b

# elif f == '/':

# h = a / b

# else:

# h = 0

# print(h)

# 石头剪刀布

# quan = input('请输入你想出的：')

# import numpy as np

# res=np.random.choice(['石头','剪刀','布'])

# print('对手为:',res)

# if res == '石头':

# if quan == '石头':

# print('平局')

# elif quan == '剪刀':

# print('你输了')

# elif quan == '布':

# print('你赢了')

# elif res == '剪刀':

# if quan == '石头':

# print('你赢了')

# elif quan == '剪刀':

# print('平局')

# elif quan == '布':

# print('你输了')

# elif res == '布':

# if quan == '石头':

# print('你输了')

# elif quan == '剪刀':

# print('你赢了')

# elif quan == '布':

# print('平局')

# import math

# a = float(input())

# b = float(input())

# c = float(input())

# if a+b>c and a+c>b and b+c>a:

# print('周长为：%.2f'%(a+b+c))

# ban = (a+b+c)/2

# s = math.sqrt(ban*(ban-a)*(ban-b)*(ban-c))

# print('面积为：%.2f'%s)

# else:

# print('不能组成三角形')

# import time

# sum_ = 0

# start = time.time()

# for i in range(1000000):

# sum_ += sum_

# end = time.time()

# print(end-start)

# import random

# count = 0

# for i in range(4):

# count = count + 1

# sui = ''

# for i in range(4):

# ch = chr(random.randrange(ord('a'),ord('z')+1))

# sui = sui+ch

# print('验证码为',sui)

# yan = input('请输入你的验证码：')

# if sui == yan:

# print('验证成功')

# break

# else:

# if count <=2:

# print('验证失败，请再次验证')

# else:

# print('您只有三次机会')

# break

 

# pw = '980823'

# pwd = input('请输入你的密码：')

# count = 0

# for i in range(3):

# count = count + 1

# if pwd == pw:

# print('密码正确')

# break

# else:

 

# if count <=2:

# pwd = input('密码错误，请重新输入：')

# else:

# print('您只有三次机会，卡已经锁死')

# import random

# count = 0

# for i in range(4):

# count = count + 1

# sui = ''

# for i in range(4):

# n = random.randint(1,2)

# if n == 1:

# ch = chr(random.randrange(ord('a'),ord('z')+1))

# sui = sui+ch

# else:

# numb = random.randint(0,9)

# sui += str(numb)

# print('验证码为',sui)

# yan = input('请输入你的验证码：')

# if sui == yan:

# print('验证成功')

# break

# else:

# if count <=2:

# print('验证失败，请再次验证')

# else:

# print('您只有三次机会')

# break

# pw = '980823'

# pwd = input('请输入你的密码：')

# count = 0

# while count <=2:

# count = count + 1

# if pwd == pw:

# print('密码正确')

# break

# else:

 

# if count <=2:

# pwd = input('密码错误，请重新输入：')

# else:

# print('您只有三次机会，卡已经锁死')

# import random

# count = 0

# while count <= 2:

# count = count + 1

# sui = ''

# for i in range(4):

# n = random.randint(1,2)

# if n == 1:

# ch = chr(random.randrange(ord('a'),ord('z')+1))

# sui = sui+ch

# else:

# numb = random.randint(0,9)

# sui += str(numb)

# print('验证码为',sui)

# yan = input('请输入你的验证码：')

# if sui == yan:

# print('验证成功')

# break

# else:

# if count <=2:

# print('验证失败，请再次验证')

# else:

# print('您只有三次机会')

# break

# m = int(input('m = '))

# n = int(input('n = '))

# q = m-n

# fm = 1

# while m !=1:

 

# fm *= m

# m -=1

# fn = 1

# while n !=1:

 

# fn *= n

# n -= 1

# fmn = 1

# while q !=1:

 

# fmn *= q

# q -= 1

# print(fm // fn // fmn)

# import math

# a,b,c = eval(input('请输入a,b,c'))

# pan = b*b-(4*a*c)

# if pan > 0:

# pan1 = math.sqrt(b*b-(4*a*c))

# r1 = -b + pan1 / (2*a)

# r2 = -b - pan1 / (2*a)

# print('The root is %f and %f'%(r1,r2))

# elif pan == 0:

# pan1 = math.sqrt(b*b-(4*a*c))

# r1 = -b / (2*a)

# print('The root is %f' %r1)

# else:

# print('这个方程没有平方根')

# import random

# s = 0

# for i in range(2):

# s = s + random.randrange(1,100)

# cai = int(input('请输入这两个数的和：'))

# if s == cai:

# print('猜对了')

# else:

# print('猜错了')

# print('和为：',s)

# jin = int(input("请输入今天是："))

# wei = int(input('请输入天数：'))

# if jin == 0:

# x = '星期日'

# elif jin == 1:

# x = '星期一'

# elif jin == 2:

# x = '星期二'

# elif jin == 3:

# x = '星期三'

# elif jin == 4:

# x = '星期四'

# elif jin == 5:

# x = '星期五'

# elif jin == 6:

# x = '星期六'

# print('今天是%s'%x)

# jin1 = jin + wei % 7

# if jin1 == 0:

# x1 = '星期日'

# elif jin1 == 1:

# x1 = '星期一'

# elif jin1 == 2:

# x1 = '星期二'

# elif jin1 == 3:

# x1 = '星期三'

# elif jin1 == 4:

# x1 = '星期四'

# elif jin1 == 5:

# x1 = '星期五'

# elif jin1 == 6:

# x1 = '星期六'

# print('今天是%s,%d天后是%s'%(x,wei,x1))

# a = input('第一个数')

# b = input('第二个数')

# c = input('第三个数')

# a = [a,b,c]

# for j in range(2):

# for i in range(2):

# if a[i]>a[i+1]:

# t = a[i]

# a[i] = a[i+1]

# a[i+1] = t

# print(a)

# a1,a2 = eval(input('请输入第一袋的信息：'))

# b1,b2 = eval(input('请输入第二袋的信息：'))

# j1 = a1/a2

# j2 = b1/b2

# if(j1<j2):

# print('第二袋的好一些')

# elif j1 == j2:

# print('一样好')

# else:

# print('第一袋的好一些')

# yue = input('请输入月：')

# year = int(input('请输入年：'))

# if yue == '一' or yue == '三' or yue == '五' or yue == '七' or yue == '八' or yue == '十' or yue == '十二':

# print('%d年%s月有31天'%(year,yue))

# elif yue == '四' or yue == '六' or yue == '九' or yue == '十一':

# print('%d年%s月有30天'%(year,yue))

# elif yue == '二':

# if year % 4 == 0 and year % 100 != 0 or year % 400 == 0:

# print('%d年%s月有29天'%(year,yue))

# else:

# print('%d年%s月有28天'%(year,yue))

# import random

# res = random.randrange(1,2)

# yong = input('请输入猜测值：')

# if res == yong:

# print('正确')

# else:

# print('错误')

# quan1 = int(input('剪刀（0）石头（1）布（2）：'))

# import random

# res1=random.randrange(0,1,2)

# def zhuan(r1):

# if r1 == 0:

# r ='剪刀'

# elif r1 == 1:

# r ='石头'

# elif r1 == 2:

# r ='布'

# return r

# quan=zhuan(quan1)

# res=zhuan(res1)

# if res == '石头':

# if quan == '石头':

# print('对手为: %s,你输出的是: %s,平局'%(res,quan))

# elif quan == '剪刀':

# print('对手为: %s,你输出的是: %s,你输了'%(res,quan))

# elif quan == '布':

# print('对手为: %s,你输出的是: %s,你赢了'%(res,quan))

# elif res == '剪刀':

# if quan == '石头':

# print('对手为: %s,你输出的是: %s,你赢了'%(res,quan))

# elif quan == '剪刀':

# print('对手为: %s,你输出的是: %s,平局'%(res,quan))

# elif quan == '布':

# print('对手为: %s,你输出的是: %s,你输了'%(res,quan))

# elif res == '布':

# if quan == '石头':

# print('对手为: %s,你输出的是: %s,你输了'%(res,quan))

# elif quan == '剪刀':

# print('对手为: %s,你输出的是: %s,你赢了'%(res,quan))

# elif quan == '布':

# print('对手为: %s,你输出的是: %s,平局'%(res,quan))

# year = int(input('请输入年：'))

# month = int(input('请输入月（1-12）：'))

# day = int(input('请输入天（1-31）'))

# k = year % 100

# j = year / 100

# h = int((day+(26*(month+1)/10)+k+(k/4)+(j/4)+(5*j))%7)

# arr = ['星期六','星期日','星期一','星期二','星期三','星期四','星期五']

# print('这一天是%s'%arr[h])

# import numpy as np

# size = np.random.choice(['Ace','2','3','4','5','6','7','8','9','10','Jack','Queen','King'])

# hua = np.random.choice(['梅花','红桃','方块','黑桃'])

# print('你选的牌是%s%s'%(hua,size))

# shu = int(input('请输入一个三位数：'))

# if shu % 10 == shu // 100:

# print('%d是回文数'%shu)

# else:

# print('%d不是回文数'%shu)

# a,b,c = eval(input('请输入三个边长：'))

# if a+b>c and a+c>b and b+c>a:

# print("周长为：%d"%(a+b+c))

# else:

# print('你输入的不合法')

# shu = 1

# zhengshu = 0

# fushu = 0

# sum_ = 0

# s = 0

# while shu != 0:

 

# shu = eval(input('输入一个数，以0结束：'))

# if shu != 0:

# s = s+1

# if shu > 0:

# zhengshu = zhengshu +1

# sum_ = sum_ + shu

# elif shu < 0:

# fushu = fushu + 1

# sum_ = sum_ + shu

# print(zhengshu)

# print(fushu)

# print(sum_ / s)

# xuefei = 10000

# for i in range(14):

# xuefei = xuefei + (xuefei*(5/100))

# if i == 9:

# print(xuefei)

# print(xuefei)

# c = 0

# for i in range(100,1000):

# if i%5 == 0 and i%6 == 0:

# print(i,end=' ')

# c += 1

# if c == 10:

# c = 0

# print()