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Python Regular Expressions in Python Introduction to Regular Expressions Word Length

Posted by Pankaj Gupta
Pankaj Gupta
3,469 Points

word_length

please help, not sure where am I missing it

word_length.py 
import re

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

def find_words(count, str1):
    return re.findall(r'\w{count,}' , str1)

2 Answers

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

You don't want the word "count" to appear in the regex, but instead you want the value it represents to be there. So you'll probably need to construct your regex using string concatenation or formatting. For example:

def find_words(count, str1):
    return re.findall(r'\w{' + str(count) + ',}' , str1)
Perry Adkins
Perry Adkins
8,413 Points
Perry Adkins
Perry Adkins
8,413 Points

word_length challenge

Multiply '\w' by count, to find words that are equal in length to count, then add a '+' to also find words with more than count letters.

def find_words(count, string):

return re.findall(r'\w' * count + '+', string)