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Janne Karila
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  • It's not 100 % clear what exceptions you expect, but I presume you are trying to handle the case when the regex does not match. I suggest handling it this way:

          #Transformation #1
          match = re.match(pattern, inword)
          result = match.group() if match else None
    
  • A possible explanation to your program suddenly slowing down is that regexes can suffer from catastrophic backtracking.

Janne Karila
  • 10.4k
  • 20
  • 34