【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