word-boundaries – Tarik Billa

What are non-word boundary in regex (\B), compared to word-boundary?

August 5, 2023 by Tarik

A word boundary (\b) is a zero width match that can match: Between a word character (\w) and a non-word character (\W) or Between a word character and the start or end of the string. In Javascript the definition of \w is [A-Za-z0-9_] and \W is anything else. The negated version of \b, written \B, … Read more

Do regular expressions from the re module support word boundaries (\b)?

December 16, 2022 by Tarik

You should be using raw strings in your code >>> x = ‘one two three’ >>> y = re.search(r”\btwo\b”, x) >>> y <_sre.SRE_Match object at 0x100418a58> >>> Also, why don’t you try word = ‘two’ re.compile(r’\b%s\b’ % word, re.I) Output: >>> word = ‘two’ >>> k = re.compile(r’\b%s\b’ % word, re.I) >>> x = ‘one … Read more