• 【Python】【Basic】【数据类型】基本数据类型

    1、数字

    int（整型）

    　　在32位机器上，整数的位数为32位，取值范围为-2**31～2**31-1，即-2147483648～2147483647
    　　在64位系统上，整数的位数为64位，取值范围为-2**63～2**63-1，即-9223372036854775808～9223372036854775807
     int
    2、布尔值
    　　真或假
    　　1 或 0
    3、字符串
    "hello world"
    字符串常用功能：
    • 移除空白
    • 分割
    • 长度
    • 索引
    • 切片
     str
     
     
    %Y  Year with century as a decimal number.
    %m  Month as a decimal number [01,12].
    %d  Day of the month as a decimal number [01,31].
    %H  Hour (24-hour clock) as a decimal number [00,23].
    %M  Minute as a decimal number [00,59].
    %S  Second as a decimal number [00,61].
    %z  Time zone offset from UTC.
    %a  Locale's abbreviated weekday name.
    %A  Locale's full weekday name.
    %b  Locale's abbreviated month name.
    %B  Locale's full month name.
    %c  Locale's appropriate date and time representation.
    %I  Hour (12-hour clock) as a decimal number [01,12].
    %p  Locale's equivalent of either AM or PM.
    字符串格式化占位符
     
    4、列表
    创建列表：
    ame_list = ['alex', 'seven', 'eric']
    或
    name_list ＝ list(['alex', 'seven', 'eric'])

    基本操作：

    • 索引
    • 切片
    • 追加
    • 删除
    • 长度
    • 切片
    • 循环
    • 包含
     list
    5、元祖
    创建元祖：
    ages = (11, 22, 33, 44, 55)
    或
    ages = tuple((11, 22, 33, 44, 55))
    基本操作：
    • 索引
    • 切片
    • 循环
    • 长度
    • 包含
     tuple
    6、字典（无序）
    创建字典：
    person = {"name": "mr.wu", 'age': 18}
    或
    person = dict({"name": "mr.wu", 'age': 18})

    常用操作：

    • 索引
    • 新增
    • 删除
    • 键、值、键值对
    • 循环
    • 长度
     dict

    7. set

    set集合，是一个无序且不重复的元素集合

    class set(object):
    """
    set() -> new empty set object
    set(iterable) -> new set object
     
    Build an unordered collection of unique elements.
    """
    def add(self, *args, **kwargs): # real signature unknown
        """
        Add an element to a set，添加元素
         
        This has no effect if the element is already present.
        """
        pass
 
    def clear(self, *args, **kwargs): # real signature unknown
        """ Remove all elements from this set. 清除内容"""
        pass
 
    def copy(self, *args, **kwargs): # real signature unknown
        """ Return a shallow copy of a set. 浅拷贝  """
        pass
 
    def difference(self, *args, **kwargs): # real signature unknown
        """
        Return the difference of two or more sets as a new set. A中存在，B中不存在
         
        (i.e. all elements that are in this set but not the others.)
        """
        pass
 
    def difference_update(self, *args, **kwargs): # real signature unknown
        """ Remove all elements of another set from this set.  从当前集合中删除和B中相同的元素"""
        pass
 
    def discard(self, *args, **kwargs): # real signature unknown
        """
        Remove an element from a set if it is a member.
         
        If the element is not a member, do nothing. 移除指定元素，不存在不保错
        """
        pass
 
    def intersection(self, *args, **kwargs): # real signature unknown
        """
        Return the intersection of two sets as a new set. 交集
         
        (i.e. all elements that are in both sets.)
        """
        pass
 
    def intersection_update(self, *args, **kwargs): # real signature unknown
        """ Update a set with the intersection of itself and another.  取交集并更更新到A中 """
        pass
 
    def isdisjoint(self, *args, **kwargs): # real signature unknown
        """ Return True if two sets have a null intersection.  如果没有交集，返回True，否则返回False"""
        pass
 
    def issubset(self, *args, **kwargs): # real signature unknown
        """ Report whether another set contains this set.  是否是子序列"""
        pass
 
    def issuperset(self, *args, **kwargs): # real signature unknown
        """ Report whether this set contains another set. 是否是父序列"""
        pass
 
    def pop(self, *args, **kwargs): # real signature unknown
        """
        Remove and return an arbitrary set element.
        Raises KeyError if the set is empty. 移除元素
        """
        pass
 
    def remove(self, *args, **kwargs): # real signature unknown
        """
        Remove an element from a set; it must be a member.
         
        If the element is not a member, raise a KeyError. 移除指定元素，不存在保错
        """
        pass
 
    def symmetric_difference(self, *args, **kwargs): # real signature unknown
        """
        Return the symmetric difference of two sets as a new set.  对称差集
         
        (i.e. all elements that are in exactly one of the sets.)
        """
        pass
 
    def symmetric_difference_update(self, *args, **kwargs): # real signature unknown
        """ Update a set with the symmetric difference of itself and another. 对称差集，并更新到a中 """
        pass
 
    def union(self, *args, **kwargs): # real signature unknown
        """
        Return the union of sets as a new set.  并集
         
        (i.e. all elements that are in either set.)
        """
        pass
 
    def update(self, *args, **kwargs): # real signature unknown
        """ Update a set with the union of itself and others. 更新 """
        pass
    set

    set

    set集合，是一个无序且不重复的元素集合

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    class set(object):
        """
        set() -> new empty set object
        set(iterable) -> new set object
         
        Build an unordered collection of unique elements.
        """
        def add(self, *args, **kwargs): # real signature unknown
            """
            Add an element to a set，添加元素
             
            This has no effect if the element is already present.
            """
            pass
     
        def clear(self, *args, **kwargs): # real signature unknown
            """ Remove all elements from this set. 清除内容"""
            pass
     
        def copy(self, *args, **kwargs): # real signature unknown
            """ Return a shallow copy of a set. 浅拷贝  """
            pass
     
        def difference(self, *args, **kwargs): # real signature unknown
            """
            Return the difference of two or more sets as a new set. A中存在，B中不存在
             
            (i.e. all elements that are in this set but not the others.)
            """
            pass
     
        def difference_update(self, *args, **kwargs): # real signature unknown
            """ Remove all elements of another set from this set.  从当前集合中删除和B中相同的元素"""
            pass
     
        def discard(self, *args, **kwargs): # real signature unknown
            """
            Remove an element from a set if it is a member.
             
            If the element is not a member, do nothing. 移除指定元素，不存在不保错
            """
            pass
     
        def intersection(self, *args, **kwargs): # real signature unknown
            """
            Return the intersection of two sets as a new set. 交集
             
            (i.e. all elements that are in both sets.)
            """
            pass
     
        def intersection_update(self, *args, **kwargs): # real signature unknown
            """ Update a set with the intersection of itself and another.  取交集并更更新到A中 """
            pass
     
        def isdisjoint(self, *args, **kwargs): # real signature unknown
            """ Return True if two sets have a null intersection.  如果没有交集，返回True，否则返回False"""
            pass
     
        def issubset(self, *args, **kwargs): # real signature unknown
            """ Report whether another set contains this set.  是否是子序列"""
            pass
     
        def issuperset(self, *args, **kwargs): # real signature unknown
            """ Report whether this set contains another set. 是否是父序列"""
            pass
     
        def pop(self, *args, **kwargs): # real signature unknown
            """
            Remove and return an arbitrary set element.
            Raises KeyError if the set is empty. 移除元素
            """
            pass
     
        def remove(self, *args, **kwargs): # real signature unknown
            """
            Remove an element from a set; it must be a member.
             
            If the element is not a member, raise a KeyError. 移除指定元素，不存在保错
            """
            pass
     
        def symmetric_difference(self, *args, **kwargs): # real signature unknown
            """
            Return the symmetric difference of two sets as a new set.  对称差集
             
            (i.e. all elements that are in exactly one of the sets.)
            """
            pass
     
        def symmetric_difference_update(self, *args, **kwargs): # real signature unknown
            """ Update a set with the symmetric difference of itself and another. 对称差集，并更新到a中 """
            pass
     
        def union(self, *args, **kwargs): # real signature unknown
            """
            Return the union of sets as a new set.  并集
             
            (i.e. all elements that are in either set.)
            """
            pass
     
        def update(self, *args, **kwargs): # real signature unknown
            """ Update a set with the union of itself and others. 更新 """
            pass
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  • 原文地址：https://www.cnblogs.com/demonzk/p/7515892.html
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