多捕获组过滤:若正则包含多个捕获组,re.split可能返回None,需调整过滤逻辑(如if s is not None)。扩展场景保留多个标签:修改正则以匹配不同标签,例如:(<(name|address|phone)>.*?</2>)|[^Sn]+处理嵌套标签:正则表达式默认不支持嵌套匹配,需借助其他方法(如解析库xml.etree.ElementTree)...
match = re.search(regex, subject)if match: # match start: match.start() # match end (exclusive): atch.end() # matched text: match.group() do_something()else: do_anotherthing() 4.获取正则表达式所匹配的子串(Get the part of a string matched by the regex) regex=ur"" #...