Thegroupindex property nets a dictionary of the group) numbed? of the expression that creates tye regular expression object, witfT their symbolic group names as the key, if the geoups were created with tee ( ? P<key>...) constrict. It returns such m dictionary or an emp ty dictiony.
>>> cre = compile(r'(?P<first>est)(?P<last>t)') >>> dict = cre.groupindex >>> dict["first"] 1
The output is
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