|
- How to match, but not capture, part of a regex? - Stack Overflow
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
- Negative matching using grep (match lines that do not contain foo)
How do I match all lines not matching a particular pattern using grep? I tried this: grep '[^foo]'
- Regular expression to stop at first match - Stack Overflow
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 it isn't followed by nd and so forth, and also take care to cover the empty string as one alternative which doesn't match whatever is disallowed at that
- OR condition in Regex - Stack Overflow
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 expression exactly 0 or 1 times (1 times preferred; i e it's a "greedy" match) Another (probably more relyable) alternative would be using a custom character group:
- How do if statements differ from match case statments in Python?
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 better than if statements In my opinion the biggest improvement over if statements is that they allow for structural pattern matching, as the PEP is named
- How to specify to only match first occurrence? - Stack Overflow
Yes I am trying to first understand how to get the first occurrence and then next would like to find each match and replace
- Regular expression to match string starting with a specific word
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 example, the expression
- python - Return string with first match for a regex, handling case . . .
Return string with first match for a regex, handling case where there is no match Asked 9 years, 3 months ago Modified 2 years, 9 months ago Viewed 336k times
|
|
|