Deque objects support the following methods: append(x)¶ Add x to the right side of the deque. appendleft(x) Add x to the left side of the deque. clear() Remove all elements from the deque leaving it with length 0. copy() Create a shallow copy of the
re模块 python官方文档链接:https://docs.python.org/zh-cn/3/library/re.html re模块源码 r"""Support for regular expressions (RE). This module provides regular expression matching operations similar to those found in Perl. It supports both 8-bit and Unicod