Match.groupdict: Meaning of default argument?
Loris Bennett
loris.bennett at fu-berlin.de
Tue May 3 07:37:58 EDT 2022
ram at zedat.fu-berlin.de (Stefan Ram) writes:
> "Loris Bennett" <loris.bennett at fu-berlin.de> writes:
>>I thought that 'days' would default to '0'.
>
> It will get the value '0' if (?P<days>\d*) does
> /not/ participate in the match.
>
> In your case, it /does/ participate in the match,
> \d* matching the empty string.
>
> Try (?P<days>\d+)?.
Ah, thanks. I was misunderstanding the meaning of 'participate'.
Cheers,
Loris
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