# Python program to calculate total vowels in a string # Total vowels in a string using Python :

In this python programming tutorial, we will learn how to calculate the total number of vowels in a string.
The user will provide the string. Our program will calculate the number of vowels and print out the result.

## Algorithm to use :

We will use the following algorithm to solve this program :

1. Take the string from the user and store it in a variable.
2. Initialize one variable to 0. This variable will be used to store the count of vowels in the string.
3. Traverse through the characters of the string using a for loop.
4. On each iteration of the loop, check if the current character is a vowel or not.
5. If the current character is a vowel, increment the count variable by 1.
6. Finally, print out the vowel count.

### Python program :

```#1
def isVowel(c):
return (c == 'a' or c == 'e' or c == 'i' or c == 'o' or c == 'u' or c == 'A' or c == 'E' or c == 'I' or c == 'O' or c == 'U')

#2
input_str = input("Enter the string : ")
vowel_count = 0

#3
for ch in input_str:
#4
if isVowel(ch):
vowel_count += 1

#5
print("Total vowel count : {}".format(vowel_count))
``` This program is also available here in Github.

### Explanation :

The commented numbers in the above program denote the step numbers below :

1. isVowel method is used to check if a character is a vowel or not. It takes one character as a parameter and compares it with all upper-case and lower-case vowels. If it is a vowel, it returns True, else it returns False.
2. Ask the user to enter a string. Read the string and store it in the input_str variable. Initialize variable vowel_count to 0. This variable will hold the total count of vowels in the user input string.
3. Using one for loop, iterate through each character of the string.
4. For each character, check if it is a vowel or not. If it is a vowel, increment the variable vowel_count by 1.
5. Finally, print out the total count of vowels vowel_count

### Sample Output :

```Enter the string : hello world
Total vowel count : 3

Enter the string : aeiou
Total vowel count : 5

Enter the string : aeiouAEIOU
Total vowel count : 10

Enter the string : 12345
Total vowel count : 0

Enter the string : This is a testing line
Total vowel count : 7

Enter the string : abcdefg
Total vowel count : 2
``` ### Conclusion :

In this tutorial, we have learned how to iterate over the characters in a string in python and to find out the total number of vowels. Try to run the above example and drop one comment below if you have any queries.

Categories: python