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Python Regular Expressions in Python Introduction to Regular Expressions Word Length

Posted by Vamsi Pavan Mahesh Gunturu
Vamsi Pavan Mahesh Gunturu
4,541 Points

Could not find the solution

I seem to be getting [] as my output

word_length.py 
import re

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

1 Answer

Roman Kuzhelev
Roman Kuzhelev
7,853 Points
Roman Kuzhelev
Roman Kuzhelev
7,853 Points

It seems that you've made a 'count' WORD to be a literal part of your regular expression - I suppose that your initial intention was to use a value of this VARIABLE instead. Just try to use the following code in a place of yours:

def find_words(count, temp):
  return re.findall(r'\w' * count + '+', temp)

As you can see, here we are using the 'count' as a variable - you've just made it to be a literal part of regular expression.

Vamsi Pavan Mahesh Gunturu
Vamsi Pavan Mahesh Gunturu
4,541 Points

Oh I see, I think r'\w*2' would work fine? Thanks for the nice tip

Kenneth Love
Kenneth Love
Treehouse Guest Teacher
Kenneth Love
Kenneth Love
Treehouse Guest Teacher

r'\w*2' would look for any number of word characters followed by the number 2.