A variation of the expression by @Gumbo that makes use of \K for resetting match positions to prevent the inclusion of number blocks in the match. Usable in PCRE regex flavours.

How do I match all lines not matching a particular pattern using grep? I tried this: grep '[^foo]'

This MATLAB function returns indices of the matching features in the two input feature sets.

to capture a match between start and the first occurrence of end. Notice how the subexpression with nested parentheses spells out a number of alternatives which between them allow e only if …

Apr 13, 2013 · For example, ab|de would match either side of the expression. However, for something like your case you might want to use the ? quantifier, which will match the previous …

Jun 13, 2021 · 28 PEP 622 provides an in-depth explanation for how the new match-case statements work, what the rationale is behind them, and provides examples where they're …

Apr 13, 2010 · Yes. I am trying to first understand how to get the first occurrence and then next would like to find each match and replace.

Oct 15, 2014 · If two cells match, return value from third Asked 11 years, 1 month ago Modified 6 years, 9 months ago Viewed 633k times

Answer (line anchors vs string anchors) What this tells me is that re.match and re.fullmatch don't match line anchors ^ and $ respectively, but that they instead match string anchors \A and \Z …

Nov 13, 2021 · How do I create a regular expression to match a word at the beginning of a string? We are looking to match stop at the beginning of a string and anything can follow it. For …