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Kayla Johhnson756 Points
Ok, so i finally figured this out for the most part. For one, I was confusing the methods .upper and .lower = I figured you use upper (when you have provided lower case vowels) to catch any upper case vowels passed through. But actually you use .lower (if you have, indeed provided lower case vowels in your list of vowels) to coerce any letters passed through to lower case so that they are caught.
I needed to communicate that so that it will sink in.
What I don't get: when you use the For Loop why do you need to use a copy of the list or the word itself versus just using the list form of the word?
Why do these work:
for letter in letters.copy() for letter in word
But this doesn't:
for letter in letters
def disemvowel(word): vowels = ["a" , "e" , "i" , "o" , "u"] letters = list(word) for letter in letters: if letter.lower() in vowels: letters.remove(letter) word = "".join(letters) return word
Steven Parker224,848 Points
If you alter an interable while it is controlling a loop, you throw off the internal mechanisms of the loop and cause items to be skipped over.
But if you use a copy of the iterable to control the loop, you can make changes safely.