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Python Python Collections (2016, retired 2019) Lists Disemvowel

not sure why I have an EOF problem

def disemvowel(word): word = input() list(word) for letter in word: while letter.lower() == 'a' or letter.lower() == 'e' or letter.lower() == 'i' or letter.lower() == 'o' or letter.lower() == 'u': word.remove(letter) join(word) return word

this is my code, it kept saying EOFError, not sure why

disemvowel.py
def disemvowel(word):
    word = input()
    list(word)
    for letter in word:
        while letter.lower() == 'a' or letter.lower() == 'e' or letter.lower() == 'i' or letter.lower() == 'o' or letter.lower() == 'u':
            word.remove(letter)
    join(word)
    return word

2 Answers

Jeff Muday
MOD
Jeff Muday
Treehouse Moderator 28,716 Points

Nice try-- conceptually, I think you have a good understanding of the challenge... let's build on that.

I am suggesting some changes and explain why the change needs to be made.

  • 1 comment out "word = input()"

Since you passed in the parameter word-- we don't want to override it. Comment that out.

  • 2 CHANGE "list(word)" to "word = list(word)"

"list(word)" creates a new list from the string "word", but it has to be assigned on the left hand side to the word variable since strings are immutable.

  • 3 ITERATOR should be a copy of original word

If you remove elements from the word list during a "for" loop, it can have unexpected results -- it is recommended to work on a copy of the list. That's easy enough to fix using "word.copy()"

  • 4 REMOVE "while" REPLACE with "if"

I can tell you intended to use an "if" statement to check the presence of a vowel. Using a while loop sounds great but would cause an infinite loop condition causing your EOF error.

  • CHANGE "join"

the join() is a string method so it requires a string to join inbetween each list element. In this case it is a simple quote-quote or empty string.

def disemvowel(word):
    #word = input() # 1
    word = list(word) # 2
    for letter in word.copy(): # 3
        # 4 removed "while" on conditional below.
        if letter.lower() == 'a' or letter.lower() == 'e' or letter.lower() == 'i' or letter.lower() == 'o' or letter.lower() == 'u':
            word.remove(letter)
    ''.join(word) # 5
    return word

# now we can test it out.
print(disemvowel('I am disemvoweled'))

The new code will yield the correct output.

['d', 's', 'm', 'v', 'w', 'l', 'd']

I hope this helps!

got it, thank you!