DataFrame UserWarning with OR operator

Question

Python 3.6. I have the DataFrame warning : UserWarning: This pattern has match groups. To actually get the groups, use str.extract. with this pattern : laDataTemps.loc[laDataTemps['texte'].str.contains(r'\b(word1|word2)\b', regex=True)]

Or, if i remove parenthesis to avoid groups, it won't have the same meaning. Any idea on how i could change the pattern to remove the warning ? Thanks !

Does this answer your question? [Python: UserWarning: This pattern has match groups. To actually get the groups, use str.extract](https://stackoverflow.com/questions/39901550/python-userwarning-this-pattern-has-match-groups-to-actually-get-the-groups) — krassowski, Feb 28 '20 at 15:05

score 4 · Accepted Answer · answered Mar 27 '18 at 15:58

4

Use a non-capturing group:

laDataTemps.loc[laDataTemps['texte'].str.contains(r'\b(?:word1|word2)\b', regex=True)]
                                                      ^^^

This way, you do not capture any text and keep the semantics of the pattern where word boundaries are applied to both ends of each alternative.

answered Mar 27 '18 at 15:58

Wiktor Stribiżew

607,720
39
448
563

done, sorry i forgot after waiting for the 5 min delay – TmSmth Mar 28 '18 at 08:03

DataFrame UserWarning with OR operator

1 Answers1