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

Leo Marco Corpuz
Leo Marco Corpuz
18,975 Points

Python regular expressions

Not sure what’s wrong with my code. My error message says it’s getting a nested list output ([[]]).

word_length.py
import re

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

1 Answer

Steven Parker
Steven Parker
231,248 Points

You won't need to nest string_search inside another string, you can return it directly.

But you also don't want the word "count" as part of your regex. Instead, use concatenation or formatting to include the value of the count in the regex.