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Python Python Collections (2016, retired 2019) Lists Disemvowel

Rakesh Bharadwaj
Rakesh Bharadwaj
1,376 Points
Posted by Rakesh Bharadwaj
Rakesh Bharadwaj
1,376 Points

Kindly tell me the mistake. It is giving me proper output

def disemvowel(word): lime = list(word) vowel = ["a","e","i","o","u"] for letter in lime: if letter.lower() in vowel: lime.remove(letter) word = "".join(lime) return word

disemvowel.py 
def disemvowel(word):
    lime = list(word)
    vowel = ["a","e","i","o","u"]
    for letter in lime:
        if letter.lower() in vowel:
            lime.remove(letter)
    word = "".join(lime) 
    return word

1 Answer

james south
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.a{fill-rule:evenodd;}techdegree seal-36
james south
Front End Web Development Techdegree Graduate 33,271 Points
james south
.a{fill-rule:evenodd;}techdegree seal-36
james south
Front End Web Development Techdegree Graduate 33,271 Points

you are modifying the list that you are looping through. this results in skipping elements in the list. to see it give incorrect output try a word with several vowels in a row, like beauty. the remove method removes the requested element, but the remaining elements shift left by one. the loop then goes to the next element, which means elements get skipped. to solve make a copy of the list and loop through it while modifying the original, or vice versa.

Rakesh Bharadwaj
Rakesh Bharadwaj
1,376 Points
Rakesh Bharadwaj
Rakesh Bharadwaj
1,376 Points

def disemvowel(word): lime = list(word) lemon = lime vowel = ["a","e","i","o","u"] #print(lime) for letter in lime: #print(lime) print(lemon) if letter.lower() in vowel: #print(letter.upper()) #print(len(lime)) lemon.remove(letter) #print(len(lime)) word = "".join(lemon) return word

disemvowel("aaaaaa")

print(disemvowel("aaaa"))

I have modified this by copying it to "lemon" list, but i donot understand 2 things here

  1. I am removing letter from lemon but letter from lime is also getting removed.
  2. for loop is not traversing completely.

My concept says that for should loop through every letter in lime. Can you pls help me here