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  • 列表(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 (元素的集合)   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

    二.列表所有数据类型

    基本操作:

    • 索引
    • 切片
    • 追加
    • 删除
    • 长度
    • 切片
    • 循环
    • 包含
    list
    class list(object):
        """
        list() -> new empty list
        list(iterable) -> new list initialized from iterable's items
        """
        def append(self, p_object): # real signature unknown; restored from __doc__
            """ L.append(object) -> None -- append object to end """
            (L.append(对象)- >——没有一个对象附加到结束)
            pass
    
        def clear(self): # real signature unknown; restored from __doc__
            """ L.clear() -> None -- remove all items from L """
            (L.clear()- >没有,把所有项目从L)
            pass
    
        def copy(self): # real signature unknown; restored from __doc__
            """ L.copy() -> list -- a shallow copy of L """
            (L.copy()- >列表- L的浅拷贝)
            return []
    
        def count(self, value): # real signature unknown; restored from __doc__
            """ L.count(value) -> integer -- return number of occurrences of value """
            (L.count(价值)- >整数,返回值的出现次数)
            return 0
    
        def extend(self, iterable): # real signature unknown; restored from __doc__
            """ L.extend(iterable) -> None -- extend list by appending elements from the iterable """
            (L.extend(iterable)- >没有——从iterable扩展列表通过添加元)
            pass
    
        def index(self, value, start=None, stop=None): # real signature unknown; restored from __doc__
            """
            L.index(value, [start, [stop]]) -> integer -- return first index of value.
            Raises ValueError if the value is not present.
            (l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 insert(self, index, p_object): # real signature unknown; restored from __doc__
            """ L.insert(index, object) -- insert object before index """
            (l插入(指数(对象)——前插入对象索引)
            pass
    
        def pop(self, index=None): # real signature unknown; restored from __doc__
            """
            L.pop([index]) -> item -- remove and return item at index (default last).
            Raises IndexError if list is empty or index is out of range.
            (L.pop((指数))- >项目——删除并返回项指数(默认)。提出了IndexError如果列表为空或索引的范围。)
            """
            pass
    
        def remove(self, value): # real signature unknown; restored from __doc__
            """
            L.remove(value) -> None -- remove first occurrence of value.
            Raises ValueError if the value is not present.
            """
            (L.remove(价值)- >没有,删除第一次出现的值。提出了ValueError如果不存在的价值。)
            pass
    
        def reverse(self): # real signature unknown; restored from __doc__
            """ L.reverse() -- reverse *IN PLACE* """
            pass
    
        def sort(self, key=None, reverse=False): # real signature unknown; restored from __doc__
            """ L.sort(key=None, reverse=False) -> None -- stable sort *IN PLACE* """
            pass
    
        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 __delitem__(self, *args, **kwargs): # real signature unknown
            """ Delete self[key]. """
            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, y): # real signature unknown; restored from __doc__
            """ x.__getitem__(y) <==> x[y] """
            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 __iadd__(self, *args, **kwargs): # real signature unknown
            """ Implement self+=value. """
            pass
    
        def __imul__(self, *args, **kwargs): # real signature unknown
            """ Implement self*=value. """
            pass
    
        def __init__(self, seq=()): # known special case of list.__init__
            """
            list() -> new empty list
            list(iterable) -> new list initialized from iterable's items
            # (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 __reversed__(self): # real signature unknown; restored from __doc__
            """ L.__reversed__() -- return a reverse iterator over the list """
            pass
    
        def __rmul__(self, *args, **kwargs): # real signature unknown
            """ Return self*value. """
            pass
    
        def __setitem__(self, *args, **kwargs): # real signature unknown
            """ Set self[key] to value. """
            pass
    
        def __sizeof__(self): # real signature unknown; restored from __doc__
            """ L.__sizeof__() -- size of L in memory, in bytes """
            pass
    
        __hash__ = None

    三.所有列表数据类型举例

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    #!/usr/bin/env python
    # -*- coding:utf-8 -*-
     
    #append追加
    name_list = ["zhangyanlin","suoning","nick"]
    name_list.append('zhang')
    print(name_list)
     
    #count制定字符出现几次
    name_list = ["zhangyanlin","suoning","nick"]
    name_list.append('zhang')
    name_list.append('zhang')
    name_list.append('zhang')
    print(name_list.count('zhang'))
     
    #extend可扩展,批量往里加数据
    name_list = ["zhangyanlin","suoning","nick"]
    name = ["aylin","zhang","yan","lin"]
    name_list.extend(name)
    print(name_list)
     
    #index找到字符所在的位置
    name_list = ["zhangyanlin","suoning","nick"]
    print(name_list.index('nick'))
     
    #insert插入,往索引里面插入值
    name_list = ["zhangyanlin","suoning","nick"]
    name_list.insert(1,"zhang")
    print(name_list)
     
    #pop在原列表中移除掉最后一个元素,并赋值给另一个变量
    name_list = ["zhangyanlin","suoning","nick"]
    name = name_list.pop()
    print(name)
     
    #remove移除,只移除从左边找到的第一个
    name_list = ["zhangyanlin","suoning","nick"]
    name_list.remove('nick')
    print(name_list)
     
    #reverse反转
    name_list = ["zhangyanlin","suoning","nick"]
    name_list.reverse()
    print(name_list)
     
    #del删除其中元素,删除1到3之间的
    name_list = ["zhangyanlin","suoning","nick"]
    del name_list[1:3]
    print(name_list)

    四.索引

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    name_list = ["zhangyanlin","suoning""aylin""nick"]
    print(name_list[0])

    五.切片

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    name_list = ["zhangyanlin","suoning""aylin""nick"]
    print(name_list[0:2])

    六.总长度

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    2
    name_list = ["zhangyanlin","suoning""aylin""nick"]
    print(name_list[1:len(name_list)])

    七.for循环

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    name_list = ["zhangyanlin","suoning""aylin""nick"]
    for i in name_list:
        print(i)
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  • 原文地址:https://www.cnblogs.com/Guido-admirers/p/6124572.html
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