Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Python Regular Expressions in Python Introduction to Regular Expressions Word Length

Posted by Alex Crump-Haill
Alex Crump-Haill
7,819 Points

Can anyone help with this (easy) RE problem?

It's quite straight forward, I just can't seem to get it right?! Thanks for any help.

word_length.py 
import re

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

def find_words(count, string):
    word_len = r'\w{len(count),}'
    return re.findall(word_len, string)

1 Answer

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

:point_right: When building your string, you need to include the count value.

You can do this by converting it to a string and concatenating it with the rest of the string. What you had before just included the word "count" (along with len()?) as part of the string.

    word_len = r'\w{' + str(count) + ',}'