Python 列表常用功能详解

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 """        pass        在列表的末尾追加一个元素        example:        new_list = [‘andy‘,‘rain‘]        new_list.append(‘hello‘)        print(new_list)

        result:        [‘andy‘, ‘rain‘, ‘hello‘]

    def clear(self): # real signature unknown; restored from __doc__        """ L.clear() -> None -- remove all items from L """        pass        清空一个列表        example:        new_list = [‘andy‘,‘rain‘]        new_list.clear()        print(new_list)

        result:        []

    def copy(self): # real signature unknown; restored from __doc__        """ L.copy() -> list -- a shallow copy of L """        return []        复制一个列表        example：        new_list = [‘andy‘,‘rain‘]        news_list = new_list.copy()        print(news_list)

        result：        [‘andy‘, ‘rain‘]

    def count(self, value): # real signature unknown; restored from __doc__        """ L.count(value) -> integer -- return number of occurrences of value """        return 0        统计列表列表中同一个元素有多少个        example：        new_list = [‘andy‘,‘rain‘,‘andy‘]        print(new_list.count(‘andy‘))

        result：        2

    def extend(self, iterable): # real signature unknown; restored from __doc__        """ L.extend(iterable) -> None -- extend list by appending elements from the iterable """        pass        在现有的列表中追加列表、元组、字符串        example：        new_list = []        new_list.extend(‘andy‘)        print(new_list)

        new_list = []        new_list.extend([‘andy‘,‘hello‘])        print(new_list)

        result：        [‘a‘, ‘n‘, ‘d‘, ‘y‘]        [‘andy‘, ‘hello‘]

    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.        """        return 0        获取列表中某个元素的索引位置        example：        new_list = [‘andy‘,‘rain‘]        print(new_list.index(‘andy‘))

        result：        0

    def insert(self, index, p_object): # real signature unknown; restored from __doc__        """ L.insert(index, object) -- insert object before index """        pass        在列表指定位置插入一个元素（必须要指定一个插入位置、即索引）        example：        new_list = [‘andy‘,‘rain‘]        new_list.insert(0,‘first‘)        print(new_list)

        result：        [‘first‘, ‘andy‘, ‘rain‘]

    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.        """        pass        删除列表元素:指定所以、删除指定元素；不指定元素默认删除最后一个元素        example:        new_list = [‘andy‘,‘rain‘,‘andy‘]        new_list.pop(0)        print(new_list)

        new_list = [‘andy‘,‘rain‘,‘andy‘]        new_list.pop()        print(new_list)

        result:        [‘rain‘, ‘andy‘]        [‘andy‘, ‘rain‘]

    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.        """        pass        删除指定元素的左数第一个        example：        new_list = [‘andy‘,‘rain‘,‘andy‘]        new_list.remove(‘andy‘)        print(new_list)

        result：        [‘rain‘, ‘hello‘]

    def reverse(self): # real signature unknown; restored from __doc__        """ L.reverse() -- reverse *IN PLACE* """        pass        #列表反转        new_list = [1,2,3,4,5,6,7,8,9,10]        new_list.reverse()        print(new_list)

        result：        [10, 9, 8, 7, 6, 5, 4, 3, 2, 1]

    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        #列表排序: 特殊字符优先级最高、然后是数字、然后是大些字母、然后是小写字母        new_list = [5,1,3,2,6,7,9,8,10,4]        new_list.sort()        print(new_list)

        new_list = [‘z‘,‘!‘,‘*‘,‘2‘,‘a‘,‘~‘,‘b‘,‘A‘,‘c‘,‘a‘,‘1‘,‘/‘,‘?‘,‘%‘]        new_list.sort()        print(new_list)

        result:        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]        [‘!‘, ‘%‘, ‘*‘, ‘/‘, ‘1‘, ‘2‘, ‘?‘, ‘A‘, ‘a‘, ‘a‘, ‘b‘, ‘c‘, ‘z‘, ‘~‘]

    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