Python 正则表达re模块之findall()详解 - 知乎
https://zhuanlan.zhihu.com/p/139596371一、re.findall函数介绍. 它在 re.py 中有定义:. def findall (pattern, string, flags=0): """Return a list of all non-overlapping matches in the string. If one or more capturing groups are present in the pattern, return a list of groups; this will be a list of tuples if the pattern has more than one group.