With re module, fullmatch is used to match only whole string
re
fullmatch
>>> expr = re.compile(r'[a-z\d]+(?:\.[a-z\d]+)+') >>> strings = ['abc.bcd.edsaf.asdfds', 'abc.asdf123.1234adf', 'abc.ad', ... 'abc', 'abc.', 'abc.132A', 'ASD', '1234', '1234ASF.'] >>> [bool(expr.fullmatch(s)) for s in strings] [True, True, True, False, False, False, False, False, False]
With regex module, you can use subexpression call to avoid duplication. Also, possessive quantifiers can be used here to speed up things.
regex
>>> expr = regex.compile(r'([a-z\d]++)(?:\.(?1))++') >>> [bool(expr.fullmatch(s)) for s in strings] [True, True, True, False, False, False, False, False, False]
Hey thanks for sharing this!
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With
remodule,fullmatchis used to match only whole stringWith
regexmodule, you can use subexpression call to avoid duplication. Also, possessive quantifiers can be used here to speed up things.Hey thanks for sharing this!