Larry Martell <[email protected]> wrote: >On Tue, Aug 8, 2017 at 12:51 PM, Chris Angelico <[email protected]> wrote: >> On Wed, Aug 9, 2017 at 2:37 AM, Larry Martell <[email protected]> >> wrote: >>> Anyone have any code or know of any packages for validating a regexp? >>> >>> I have an app that allows users to enter regexps for db searching. >>> When a user enters an invalid one (e.g. 'A|B|' is one I just saw) it >>> causes downstream issues. I'd like to flag it at entry time. >> >> re.compile()? Although I'm not sure that 'A|B|' is actually invalid. >> But re.compile("(") throws.
>Yeah, it does not throw for 'A|B|' - but mysql chokes on it with empty >subexpression for regexp' I'd like to flag it before it gets to SQL. Then you need to do a real sql query with the regex and check if it throws. -- Dipl.-Inform(FH) Peter Heitzer, [email protected] -- https://mail.python.org/mailman/listinfo/python-list
