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  • 元祖(转载)

    一.基本数据类型
      整数:int
      字符串:str(注: 等于一个tab键)
      布尔值: bool
      列表:list 
      列表用[]
      元祖:tuple
      元祖用()
      字典:dict
    注:所有的数据类型都存在想对应的类列里,元祖和列表功能一样,列表可以修改,元祖不能修改。

    二.列表所有数据类型:

    基本操作:

    • 索引
    • 切片
    • 长度
    • 包含
    • 循环
    class tuple(object):
        """
        tuple() -> empty tuple
        tuple(iterable) -> tuple initialized from iterable's items
        
        If the argument is a tuple, the return value is the same object.
        """
        def count(self, value): # real signature unknown; restored from __doc__
            """ T.count(value) -> integer -- return number of occurrences of value """
            (T.count(价值)- >整数,返回值的出现次数)
            return 0
    
        def index(self, value, start=None, stop=None): # real signature unknown; restored from __doc__
            """
            T.index(value, [start, [stop]]) -> integer -- return first index of value.
            Raises ValueError if the value is not present.
            """
            (T。指数(价值,[开始,[不要]])- >整数,返回第一索引值。提出了ValueError如果不存在的价值。)
            return 0
    
        def __add__(self, *args, **kwargs): # real signature unknown
            """ Return self+value. """
            pass
    
        def __contains__(self, *args, **kwargs): # real signature unknown
            """ Return key in self. """
            pass
    
        def __eq__(self, *args, **kwargs): # real signature unknown
            """ Return self==value. """
            pass
    
        def __getattribute__(self, *args, **kwargs): # real signature unknown
            """ Return getattr(self, name). """
            pass
    
        def __getitem__(self, *args, **kwargs): # real signature unknown
            """ Return self[key]. """
            pass
    
        def __getnewargs__(self, *args, **kwargs): # real signature unknown
            pass
    
        def __ge__(self, *args, **kwargs): # real signature unknown
            """ Return self>=value. """
            pass
    
        def __gt__(self, *args, **kwargs): # real signature unknown
            """ Return self>value. """
            pass
    
        def __hash__(self, *args, **kwargs): # real signature unknown
            """ Return hash(self). """
            pass
    
        def __init__(self, seq=()): # known special case of tuple.__init__
            """
            tuple() -> empty tuple
            tuple(iterable) -> tuple initialized from iterable's items
            
            If the argument is a tuple, the return value is the same object.
            # (copied from class doc)
            """
            pass
    
        def __iter__(self, *args, **kwargs): # real signature unknown
            """ Implement iter(self). """
            pass
    
        def __len__(self, *args, **kwargs): # real signature unknown
            """ Return len(self). """
            pass
    
        def __le__(self, *args, **kwargs): # real signature unknown
            """ Return self<=value. """
            pass
    
        def __lt__(self, *args, **kwargs): # real signature unknown
            """ Return self<value. """
            pass
    
        def __mul__(self, *args, **kwargs): # real signature unknown
            """ Return self*value.n """
            pass
    
        @staticmethod # known case of __new__
        def __new__(*args, **kwargs): # real signature unknown
            """ Create and return a new object.  See help(type) for accurate signature. """
            pass
    
        def __ne__(self, *args, **kwargs): # real signature unknown
            """ Return self!=value. """
            pass
    
        def __repr__(self, *args, **kwargs): # real signature unknown
            """ Return repr(self). """
            pass
    
        def __rmul__(self, *args, **kwargs): # real signature unknown
            """ Return self*value. """
            pass
    tuple

    三.所有元祖数据类型举例

    #count 用于计算元素出现的个数
    name_tuple = ("zhangyanlin","suoning","nick")
    print(name_tuple.count('zhangyanlin'))
    
    #index获取指定元素的指定位置
    name_tuple = ("zhangyanlin","suoning","nick")
    print(name_tuple.index('zhangyanlin'))
    

    四.索引

    name_tuple = ("zhangyanlin","suoning","nick")
    print(name_tuple[1])
    

    五.切片

    #取出第一位到最后一位减1的元素
    name_tuple = ("zhangyanlin","suoning","nick")
    print(name_tuple[0:len(name_tuple)-1])
    

    六.总长度len

    #取出最后一位减1的元素
    name_tuple = ("zhangyanlin","suoning","nick")
    print(name_tuple[len(name_tuple)-1])
    

    七.for循环

    name_tuple = ("zhangyanlin","suoning","nick")
    for i in name_tuple:
        print(i)
    

     

     
     
     
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  • 原文地址:https://www.cnblogs.com/Guido-admirers/p/6124616.html
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