列表list

列表：

Python序列(Sequence)

  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

例：
　　#li = list([1,2,3])
　　li = list((1,2,3))
　　print(li)

尾部添加一个元素：
    def append(self, p_object): # real signature unknown; restored from __doc__
        """ L.append(object) -> None -- append object to end """
        pass


把列表清空：
    def clear(self): # real signature unknown; restored from __doc__
        """ L.clear() -> None -- remove all items from L """
        pass


拷贝（浅拷贝）：
    def copy(self): # real signature unknown; restored from __doc__
        """ L.copy() -> list -- a shallow copy of L """
        return []

判断某个元素出现的次数：
    def count(self, value): # real signature unknown; restored from __doc__
        """ L.count(value) -> integer -- return number of occurrences of value """
        return 0

合并两个列表（对原来列表的一个扩展）：
    def extend(self, iterable): # real signature unknown; restored from __doc__
        """ L.extend(iterable) -> None -- extend list by appending elements from the iterable """
        pass

例：
　　li = list([1,2,3])
　　print(li)
　　#li.extend([11,22]) 列表
　　li.extend((11,22))#元组
　　print(li)
得：
　　[1, 2, 3]

　　[1, 2, 3, 11, 22]

获取下标：
    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

指定下标添加：

    def insert(self, index, p_object): # real signature unknown; restored from __doc__
        """ L.insert(index, object) -- insert object before index """
        pass
　　

li.insert(0,"xiaolong")

 

删除并获取这个值：

    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

例：
li = list([1,2,3])
print(li)
#li.extend([11,22]) 列表
#li.extend((11,22))#元组
li.insert(0,"xiaolong")
ret = li.pop(0)
print(li)
print(ret)

得：
[1, 2, 3]
[1, 2, 3]
xiaolong

删除（第一个值）：

    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

例:
　　li = [11,11,2,22,2]
　　print(li)
　　li.remove(11)
　　print(li)

得：

　　　　[11, 11, 2, 22, 2]
　　　　[11, 2, 22, 2]

 

反转：
    def reverse(self): # real signature unknown; restored from __doc__
        """ L.reverse() -- reverse *IN PLACE* """
        pass

例：
li = [11,22,33,44,55]
print(li)
li.reverse()
print(li)
得：

　　[11, 22, 33, 44, 55]
　　[55, 44, 33, 22, 11]

排序：

    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