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Python Python Collections (2016, retired 2019) Lists Disemvowel

competent- fellow
competent- fellow
5,846 Points
Posted by competent- fellow
competent- fellow
5,846 Points

How to remove last vowel?

Here is my code for the "disemvowel" exercise. Every time it fails to remove the last vowel. e.g. passing "tomatoes" returns "tmtes". But I don't know what is wrong. Thanks in advance!

disemvowel.py 
def disemvowel(word):
    word_list = list(word)
    copy_list = word_list
    vowels = ["a", "A", "e", "E", "i", "I", "O", "o", "U", "u"]
    for letter in copy_list:
        if letter in vowels:
            word_list.remove(letter)
    word = ''.join(word_list)
    return word

1 Answer

Steven Parker
Steven Parker
229,744 Points
Steven Parker
Steven Parker
229,744 Points

You had the right idea to make a copy of the list for controlling a loop. But a simple assignment doesn't make a copy, it just causes both variables to reference the same list.

To make a copy, use an empty slice ("[:]") or the ".copy()" method.

competent- fellow
competent- fellow
5,846 Points
competent- fellow
competent- fellow
5,846 Points

The .copy() method worked perfectly. Thank you very much!