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Python Regular Expressions in Python Introduction to Regular Expressions Word Length

Damien Blasko
Damien Blasko
8,519 Points
Posted by Damien Blasko
Damien Blasko
8,519 Points

Variable "count" inside regex?

I believe that this function requires a variable to be used inside of a raw string. I do not know how to do this.

word_length.py 
# EXAMPLE:
# >>> find_words(4, "dog, cat, baby, balloon, me")
# ['baby', 'balloon']

import re
def find_words(count, string):
    return re.findall(r'\w{count}+', string)

1 Answer

Steven Parker
Steven Parker
229,732 Points
Steven Parker
Steven Parker
229,732 Points

Just like ordinary strings, raw strings can be concatenated, repeated, and formatted. Any of these techniques can be used to create a solution to this challenge.

Also, the instructions don't require raw strings, and it's also possible to create a solution without using them. Just be aware of the character escaping requirements of the type of strings you choose.