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Python Regular Expressions in Python Introduction to Regular Expressions Word Length

Posted by Ian Maina
Ian Maina
4,571 Points

what am I doing wrong here?

so what is wrong with this code?

word_length.py 
import re

# EXAMPLE:
# >>> find_words(4, "dog, cat, baby, balloon, me")
# ['baby', 'balloon']
def find_words(count, string):
    return re.findall(r'\w{count, }', string)

2 Answers

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,441 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,441 Points

In your regex pattern "count" is a literal string of characters and does not get the value of the variable count. You will need to use .format() or string concatination to include the value of count in the regex string.

Post back if you need more help. Good luck!!

James Peter
James Peter
3,180 Points
James Peter
James Peter
3,180 Points

Breaking (r'\w{count, }', string) into three parts and formatting the count would make the code work.

(r'\w{' + '{}'.format(count) +........ the remaining needs to concatenated to make it work.