How to check if all elements from list are present in string using regex?-CodePudding

Im trying to check if all words in list are present in string. This code works for me, but it also matches strings inside words, like if I search for 'cat', it also matches 'category', so I need regex to only match whole words, but just cannot find a way how to do it. I need it return True or False.

are_both_words_present = all(x in normalized_title for x in [question_element[0], question_element[1], question_element[2]])

CodePudding user response：

I think the "\b" is what you are looking for. So the line of code you shared may turn into:

import re
are_both_words_present = all(re.search(r"\b"   x   r"\b", normalized_title) for x in [question_element[0], question_element[1], question_element[2]])

CodePudding user response：

You can use \b to signify a word boundary (i.e. whitespace or start/end of string):

>>> import re
>>> test = ('cat', 'category')
>>> for t in test:
...   re.match(r'\bcat\b', t)
...
<re.Match object; span=(0, 3), match='cat'>

In this case, only cat matches, since it's the only string that have cat delimited by two word boundaries.