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  1. Prepare
  2. Python
  3. Regex and Parsing
  4. Group(), Groups() & Groupdict()
  5. Discussions

Group(), Groups() & Groupdict()

  • rasaab1029
     + 1 comment

    You can use re.match, that's not the problem. The problem is if you are using \w, because Python counts underscores and this problem does not.

    import re
S=input()
#print(S)
m=re.match(r'.*?([a-z0-9A-Z])\1', S)
if m is None:
    print(str(-1))
else:
    print(m.group(1))