Dec 1, 2012 · you can match. a[^ab]*b i.e specify a character class which excludes the starting and ending delimiiters. In the more general case, you can painstakingly construct an expression like. start(|[^e]|e(|[^n]|n(|[^d])))*end to capture a match …

I realise that if I sort the list in descending order and use -1 for the MATCH [match_type] argument, then it works okay, but, the list is over 1,000 rows and is far easier to read in ascending order.

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 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:

Jul 18, 2018 · I'm trying to match the file names against the recorded names in my CSV file. It generally works, but sometimes I get incorrect matches. Let's say I have two files that start similarly, Apple and Apple_Pie. Apple will match to Apple and move to the right directory, but Apple_Pie will first match to Apple and move to the wrong directory.

Oct 8, 2008 · If zero or more characters at the beginning of string match the regular expression pattern, return a corresponding MatchObject instance. Return None if the string does not match the pattern; note that this is different from a zero-length match. Note: If you want to locate a match anywhere in string, use search() instead.

If you want to match the entire string where you want to match everything but certain strings you can do it like this: ^(?!(red|green|blue)$).*$ This says, start the match from the beginning of the string where it cannot start and end with red, green, or …

Feb 25, 2011 · what to use if I want to find the exact string match 'bla'. My cell array has both 'bla' and 'blah' elements, but i want to pick out only 'bla'. Walter Roberson on 22 Jan 2021

Oct 15, 2014 · =INDEX(B:B,MATCH(C2,A:A,0)) I should mention that MATCH checks the position at which the value can be found within A:A (given the 0, or FALSE, parameter, it looks only for an exact match and given its nature, only the first instance found) then INDEX returns the value at that position within B:B.

Mar 11, 2013 · You could use something like this: import re s = #that big string # the parenthesis create a group with what was matched # and '\w' matches only alphanumeric charactes p = re.compile("name +(\w+) +is valid", re.flags) # use search(), so the match doesn't have to happen # at the beginning of "big string" m = p.search(s) # search() returns a Match object with …

As others have said, re.match() checks for a match only at the beginning of the string. re.search() can mimic that too by prepending \A to whatever pattern used. On the other hand, re.fullmatch() checks if the entire string is a match, which can again be mimicked by re.search() by prepending \A and appending \Z to whatever pattern used. Below ...