Is there Any other Simple Solution??

Question

Write a program that takes in a string as input, counts and outputs the number of vowels (A, E, I, O, U).

Input Format:
A string (letters can be both uppercase or lower case).

Output Format:
A number which represents the total number of vowels in the string.

Answer 1

you can simplify your code by defining vowels as
vowel = "aeiou"
(it does not need to be a list of individual characters)

and you do not need to sort the user_input.

Answer 2

user_input = input().lower()

vowel =["a","e","i","o","u"]

text = sorted(user_input)

vowel_count = 0

for i in text:
if i in vowel:
vowel_count += 1

print(vowel_count)

Answer 3

#This was my simplest solution:

print(sum(char in 'aeiou' for char in input().lower()))