Regular expression doesn't match
I am trying to find this in a regex string.
: [J, BASIC]
? [CINTERMEDIATE]
: [D,MEDIUM]
the first character can be either ':' or '?' that is, white space followed by square brackets within square brackets, there are two text blocks separated by comma and / or space. the comma or space may or may not be present.
Here is what I wrote to find it
regex = re.compile('[:|?\s[\w[,\s]?\w]]+')
but he only finds
'C]'
'E]'
'M]'
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3 answers
Your regex does not treat [
as literals .. they are accepted as special characters (character set)
You can use the following:
[:?]\s*\[\w+(\s*,\s*)?\w+\]
Explanation:
-
[:?]
the first character can be either :: or '?' -
\s*\[
then there is a space, then square brackets -
\w+(\s*,\s*)?\w+
there are two text blocks in square brackets, separated by a comma and / or a space (with an extra comma and a space) -
\]
close parenthesis
See DEMO
Edit: If you want to capture a match, you can use:
([:?]\s*\[\w+(?:\s*,\s*)?\w+\])
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