python Regular Expression skipping stings it should not

Asked Oct 17 '18 at 12:26

Active Oct 17 '18 at 12:28

Viewed 55 times

I wrote a regex where I want to skip .do string but allow .doc string.

What I have is \.do. However it also skips .doc files. Is there away to only capture .do and ignore strings that contain .doc or .docx

so \.do should match mike.do but not mike.doc Currently it matches both.

edited Oct 17 '18 at 12:28

asked Oct 17 '18 at 12:26

user3525290

You can try using a word boundary `\b`: `r"\.do\b"` – Jerry Oct 17 '18 at 12:28
that worked. thanks. getting into regex was unfamiliar – user3525290 Oct 17 '18 at 12:32
An alternative you can try is `\.do(?!\S)` to make sure anything except a whitespace after .do will be rejected. – Nathan Liu Oct 17 '18 at 13:51

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