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.

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 ...

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 …

Jan 9, 2023 · Sure, match doesn't require the entire string to match the regex. But the ^ and $ anchors ensure that this regex can only possibly match against the entire string - that's their purpose . – Karl Knechtel

Nov 8, 2010 · The potential hiccup is that the regex could be written so that it could either match the entire string or a part of it, with the Regex.Match function returning the partial match even though a complete match is possible. –

The function rejects a match when the distance between the features is greater than the value of MatchThreshold. Increase the value to return more matches. Increase the value to return more matches. Inputs that are binaryFeatures objects typically require a …

This means "match any number of characters that are either whitespace or non-whitespace" - effectively "match any string". Another option that only works for JavaScript (and is not recognized by any other regex flavor) is [^]* which also matches any string.

Jun 3, 2010 · OK, but of course then the match result will be an empty string (with a successful match). If you're just checking whether a match is possible, then this doesn't matter. So yes, omit the .*$, and you're done faster. –