Determine if a group within a regex match is a number

If I have, for example, the below regex string:

'^/abc/(?P<some_int>\d{3})/\d{0,2}/$'  

Is there an easy way to determine when a group is a number/int?

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I know that it is an int, but say this needed to be processed somewhere else and it needed to be deduced from just the m开发者_开发百科atch object.

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m.group(WHICHEVER_YOU_WANT).isdigit()

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You are matching it with \d{3} so it will match only if it is a number with three digits ( including leading zeroes)