Regex Match Pattern with Some Exceptions

Question

I'm trying to find matches for Instagram handles but ignore specific handles.

I'm using

@[A-Za-z0-9\.\_]+

to match any handle starting with an @ sign, but I want to ignore handles like @example and @test which for that I have the regex @example|@test.

New to regex and trying to figure out how to do the look ahead and ignore the example and test cases. Not sure how to combine the two into one.

I'm just looking through a text field using something like df['regex_handle'] = df['TEXT'].str.contains('@[A-Za-z0-9\.\_]+')== True so I want it to return False if it has example or test in it — user3242036, Dec 16 '20 at 16:13

score 0 · Accepted Answer · answered Dec 16 '20 at 16:12

0

Do this:

@(?!example|test)[A-Za-z0-9._]+

Uses negative lookahead to ignore the handles that are not required.

Demo

answered Dec 16 '20 at 16:12

CinCout

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This will also fail to match `@tester`. – Wiktor Stribiżew Dec 16 '20 at 16:22
1

Yes, it will only match "test" exactly which is what I wanted – user3242036 Dec 16 '20 at 16:41

Regex Match Pattern with Some Exceptions

1 Answers1