Write a function count_vowels() that takes a string and returns the number of vowels (a, e, i, o, u).

 

def count_vowels(string):

    """This function counts the number of vowels (a, e, i, o, u) in a given string."""

    vowels = "aeiouAEIOU"  

    count = 0  

    for char in string:  

        if char in vowels:  

            count += 1  

    return count  

text = "Hello World"

print("Number of vowels:", count_vowels(text))  

#source code --> clcoding.com 

Code Explanation:

 Function Definition

def count_vowels(string):

def is used to define the function.

count_vowels is the function name.

It takes one parameter, string (the input text).

Defining Vowels

vowels = "aeiouAEIOU"

A string containing all vowel letters (both lowercase and uppercase).

Used to check if a character is a vowel.

Initialize Vowel Count

count = 0

A variable count is set to 0 to store the number of vowels.

Loop Through the String

for char in string:

Loops through each character in the input string.

Check if Character is a Vowel

if char in vowels:

Checks if the character is present in the vowels string.

Increase the Count

count += 1

If the character is a vowel, increase the count by 1.

Return the Count

return count

The function returns the total number of vowels found in the string.