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Python Regular Expressions in Python Introduction to Regular Expressions Word Length

Aidan Taylor-Lynch
Aidan Taylor-Lynch
7,630 Points

I can't figure out how to use a variable in {variable, upper bound} to find a string of length variable and greater.

I also can't attached my code so I copied it:

import re

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

It seems that python can't see that count is a variable and returns an empty list.

word_length.py
import re

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

2 Answers

Steven Parker
Steven Parker
231,248 Points

:point_right: It's up to you to convert the variable into a string, and include it in your RE:

def find_words(count, string):
    return re.findall(r'\w{' + str(count) + ',}', string)
Aidan Taylor-Lynch
Aidan Taylor-Lynch
7,630 Points

You're a Genius Steveo! Thanks so much!!