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Python Regular Expressions in Python Introduction to Regular Expressions Word Length

Justin White
Justin White
4,545 Points
Posted by Justin White
Justin White
4,545 Points

Regex multiple repeat error

I'm not sure what I'm doing wrong.

word_length.py 
import re

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

def find_words(count, data):
    return re.findall(r'\D{' + str(count) + '}+,', data)

I also tried:

word_length.py 
import re

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

def find_words(count, data):
    return re.findall(r'\w{' + str(count) + '}+,', data)
Keir Whitlock
Keir Whitlock
4,407 Points
Keir Whitlock
Keir Whitlock
4,407 Points

you need a comma inside the match {} to signify 'or more' occurrences.

1 Answer

Alejandro Alvarez
Alejandro Alvarez
2,477 Points
Alejandro Alvarez
Alejandro Alvarez
2,477 Points

The problem is the plus sign, you have both the "{}" and the "+", thus multiple repeat error. You also need the comma for the exercise {count,}.