python-字符串中带有引号的正则表达式

Question

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Hi everyone,

I need a hand for the following regex. The string is something like:

str = 'value=\"20\" />\r\n\t\r\n<\/div>","whatiwant":"<div id=\"whatiwant\">\r\n\t\r\n\t\t<\/div>","idontwanthat":"<div id=\"idontwanthat\">\r\n\t\r\n\t blablalblalblalbla \t\r\n\t\t\t<\/div>"'

I would like the entire div of "whatiwant". I tried the following:

matches=re.findall(r'\"whatiwant\":\"(.+?)\":\"',mstr)

ps: i can have other div in the div.

Any help with me appreciated

Answer 1

Try using a positive lookahead -

\"whatiwant\":.*(?=,\".*?\"\:)

DEMO

Answer 2

"whatiwant":"(.*?[^\\])??"

This will match the literal "whatiwant": and then anything (even an empty string) inside double quotes "" .

If you want to extract the div's html code, you can retrieve the first group's value:

matches=re.findall(r'"whatiwant":"(.*?[^\\])??"', mstr)
for match in matches:
    html= match.group(1)