For what it's worth, the "regex" library on PyPI (not "re") supports timeouts:
https://pypi.org/project/regex/ On Mon, Feb 14, 2022, 6:54 PM J.B. Langston <jblangs...@datastax.com> wrote: > Hello, > > I had opened this bug because I had a bad regex in my code that was > causing python to hang in the regex evaluation: > https://bugs.python.org/issue46627. I have fixed the problem with that > specific regex, but more generally I think it would be good to have a > timeout option that could be configurable when compiling the regex so that > if the regex didn't complete within the specified timeframe, it would abort > and throw an exception. > > The bug was closed as Won't Fix and it was suggested that I bring up my > idea here. The suggestion made to me on the bug was to read Mastering > Regular Expressions and get better at writing regexes. I will take this > advice, but this isn't really a reasonable solution to my problem for a few > reasons. > My use case is log parsing and I have a large number of regexes that run > over many different log lines. With the volume of regexes I have, it's hard > to make sure every regex has no potential problems, especially when the > pathological behavior only occurs on certain inputs that may not have been > anticipated when developing the regex. > Also because of the volume of data these regexes are parsing, I would > never want to allow a regex to run longer than a few milliseconds because > if it did, that would kill my log processing throughput. I'd rather that it > just raise an exception and move on to the next log entry. > Thanks, > J.B. > _______________________________________________ > Python-ideas mailing list -- python-ideas@python.org > To unsubscribe send an email to python-ideas-le...@python.org > https://mail.python.org/mailman3/lists/python-ideas.python.org/ > Message archived at > https://mail.python.org/archives/list/python-ideas@python.org/message/BJJFVT6WECWOWDIMBEHCMYC4V5YCTGFN/ > Code of Conduct: http://python.org/psf/codeofconduct/ >
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