I'm trying to write a regex for re.search that can match a string as long as the word prod exists anywhere in the text (.*prod.*). however, it should fail the match if the string should have the word orange anywhere in it.

• web-prod-green # should match
• web-prod-orange # should fail to match
• web-orange-green # should fail to match
• orange-prod-green # should fail to match

How can i do this? Thanks.

CodePudding user response：

We could use a negative lookahead to exclude the presence of orange:

^(?!.*\borange\b).*\bprod\b.*$

Demo