Python数据类型之元祖

一.基本数据类型
　　整数：int
　　字符串：str(注：\t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

 

三.所有元祖数据类型举例

?

1 2 3 4 5 6 7

#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

?

1 2	name_tuple = ("zhangyanlin","suoning","nick") print(name_tuple[1])

五.切片

?

1 2 3

#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

?

1 2 3

#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

?

1 2 3

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