Python正则表达式用自己替换每一个匹配项并加上新行

Python正则表达式用自己替换每一个匹配项并加上新行

要用自身替换整个匹配项，可以使用替换后向引用

g<0>

。但是，您要替换匹配并将其存储在变量中。您需要传递一个回调方法作为的替换参数

re.sub

，并返回整个匹配值（

match.group()

），并在该值后附加换行符：

import rematches = []    # Variable to hold the matchesdef repl(m):    # m is a match data object    matches.append(m.group())         # Add a whole match value    return "{}n".format(m.group())   # Return the match and a newline appended to its = 'I want to be able to replace many words, especially in this sentence, since it will help me solve by problem. That makes sense right?'pattern = re.compile(r'words[,]|sentence[,]|problem[.]')s = re.sub(pattern, repl, s)print(s)print(matches)

参见Python演示