Python Program Count vowels in String

Python program to count the number of vowels in a string; Through this tutorial, i am going to show you how to count number of vowels in a string in python program.

In this tutorial, i will write a python program to count number of vowels using sets in given string using function, for loop and Ascii value.

How to count the vowels in a string in Python

See the following python program to count vowels in a string using function, for loop and ascii value; as shown below:

  • 1: How to count number of vowels in a string in python using for loop
  • 2: Python Program to Count Vowels in string Using For loop and Lower() function
  • 3: Program to Count Total Number of Vowels in a String Using ASCII Value

1: How to count number of vowels in a string in python using for loop

  • Get input string from the user in python program.
  • Count vowels in string using for loop and if statement.
    • Inside the For Loop, we are using If Statement to check whether the character is a, e, i, o, u, A, E, I, O, U. If true, increment the vowels value otherwise, skip that character.
  • Print result.
# Python Program to Count Vowels in a String
str1 = input("Please Enter Your Own String : ")
vowels = 0
 
for i in str1:
    if(i == 'a' or i == 'e' or i == 'i' or i == 'o' or i == 'u' or i == 'A'
       or i == 'E' or i == 'I' or i == 'O' or i == 'U'):
        vowels = vowels + 1
 
print("Total Number of Vowels in this String = ", vowels)

After executing the program, the output will be:

Please Enter Your Own String :  hello world
Total Number of Vowels in this String =  3

2: Python Program to Count Vowels in string Using For loop and Lower() function

  • Get input string from the user in python program.
  • Convert string to lowercase using lower() function.
  • Count vowels in string using for loop and if statement.
    • Inside the For Loop, we are using If Statement to check whether the character is a, e, i, o, u. If true, increment the vowels value otherwise, skip that character.
  • Print result.
# Python Program to Count Vowels in a String
str1 = input("Please Enter Your Own String : ")
vowels = 0
str1.lower()
for i in str1:
    if(i == 'a' or i == 'e' or i == 'i' or i == 'o' or i == 'u'):
        vowels = vowels + 1
 
print("Total Number of Vowels in this String = ", vowels)

After executing the program, the output will be:

Please Enter Your Own String :  hello World
Total Number of Vowels in this String =  3

3: Program to Count Total Number of Vowels in a String Using ASCII Value

  • Get input string from the user in python program.
  • Count vowels in string using for loop, if statement, and ord() function.
    • Inside the For Loop, we are using If Statement to check whether the character is a, e, i, o, u, A, E, I, O, U by using ord() function. If true, increment the vowels value otherwise, skip that character.
  • Print result.
# Python Program to Count Vowels in a String
str1 = input("Please Enter Your Own String : ")
vowels = 0
for i in str1:
    if(ord(i) == 65 or ord(i) == 69 or ord(i) == 73
       or ord(i) == 79 or ord(i) == 85
       or ord(i) == 97 or ord(i) == 101 or ord(i) == 105
       or ord(i) == 111 or ord(i) == 117):
        vowels = vowels + 1
 
print("Total Number of Vowels in this String = ", vowels)

After executing the program, the output will be:

Please Enter Your Own String :  you are a good developer
Total Number of Vowels in this String =  11

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