Python 正则表达式 : Can't extract message containing escaped quotes

Question

我正在为 Slack 创建一个机器人，它需要能够从如下所示的数据字符串中提取消息:

[{'text': 'This is my legit "test" \'message\' with "lots" of \'quotation marks\'', 'type': 'message', 'user': '<userID>', 'channel': '<channelID>, 'ts': '1450501889.000074', 'team': '<teamID'}]

我当前的正则表达式是这样的:

re.search(r''''text': (["'])(.*?)\1''', channelstatus)

怎样才能让它只输出以下内容？

This is my legit "test" 'message' with "lots" of 'quotation marks'

Answer 1

不需要正则表达式 - ast.literal_eval() 可以处理:

>>> from ast import literal_eval
>>>
>>> s = r'''[{'text': 'This is my legit "test" \'message\' with "lots" of \'quotation marks\'', 'type': 'message', 'user': '<userID>', 'channel': '<channelID>', 'ts': '1450501889.000074', 'team': '<teamID'}]'''
>>> print(literal_eval(s)[0]["text"])
This is my legit "test" 'message' with "lots" of 'quotation marks'

^{假设<channelID>后面缺少引号偶然。}