Python Regex; why does ignorecase change something?

Asked Aug 10 '16 at 14:49

Active Aug 10 '16 at 14:50

Viewed 27 times

here is a regex : [,-_ ]+titi[,-_ ]+.

Here's a test case : "tata - titi _ Toto"

The regex is meant to capture "titi" plus optional delimitating characters, including blankspace, so that I can then change "tata - titi _ Toto" to "tata Toto".

I can't for the life of me figure what is capturing the T of Toto, and doesn't capture it when going case insensitive.

edited Aug 10 '16 at 14:50

Benjamin Hodgson

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asked Aug 10 '16 at 14:49

pouzzler

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Escape the hyphen. – Wiktor Stribiżew Aug 10 '16 at 14:51
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`r'[,_ -]+titi[,_ -]+'` (keep unescaped hyphen at first or last position in a character class) – anubhava Aug 10 '16 at 14:51
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You've supplied your regex and your test case, which is great, but please could you also give the expected and actual results? Also, https://regex101.com/ is very useful when you're debugging regexes – Benjamin Hodgson Aug 10 '16 at 14:51
Thanks for the hyphen; didn't see my mistake. – pouzzler Aug 10 '16 at 15:31

Python Regex; why does ignorecase change something?

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