zoukankan      html  css  js  c++  java
  • python & list对象

    def append(self, p_object): # real signature unknown; restored from __doc__
    """ L.append(object) -> None -- append object to end """
    pass

    append函数将字符串插入到列表自身的末尾

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

    clear函数将清除list所有元素

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

    copy函数将自身拷贝并返回

    def count(self, value): # real signature unknown; restored from __doc__
    """ L.count(value) -> integer -- return number of occurrences of value """
    return 0

    count函数统计list的元素个数

    def extend(self, iterable): # real signature unknown; restored from __doc__
    """ L.extend(iterable) -> None -- extend list by appending elements from the iterable """
    pass

    extend函数将可迭代对象的所有元素插入到自身。

    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
    index方法从字符串中查找与参数2匹配的字符串的第一个位置返回

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

    insert函数将参数3的字符串插入到由参数2指定的位置

    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

    pop函数将列表的最后一个pop,列表的长度-1

    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
    remove函数将参数2指定的值得元素删除。

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

    reverse函数将列表的元素反向排序

    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
    sort函数将列表的数据进行排序,但是只能对同一个数据类型的列表进行排序,如果数字,字母,符号一起排序就会报错。
  • 相关阅读:
    leetcode--Populating Next Right Pointers in Each Node II
    leetcode—Populating Next Right Pointers in Each Node
    Pascal's Triangle II
    leetcode—pascal triangle
    leetcode—triangle
    October 23rd, 2017 Week 43rd Monday
    October 22nd, 2017 Week 43rd Sunday
    October 21st 2017 Week 42nd Saturday
    October 20th 2017 Week 42nd Friday
    October 19th 2017 Week 42nd Thursday
  • 原文地址:https://www.cnblogs.com/zxcv-/p/6799967.html
Copyright © 2011-2022 走看看