What's wrong with the code to count vowels

Question

i wrote code to count no. of vowels in a sentence but instead it's printing no. of all characters. i can't get what's wrong?
https://code.sololearn.com/coMP0k9U2rb0/?ref=app

Answer 1

Very close, I modified it a little to use list comprehension
https://code.sololearn.com/cHbdLf1Kh6Im/?ref=app

Answer 2

just another idea
https://code.sololearn.com/c0QOaAAU8Q8j/?ref=app