Python Program to Replace all Vowels with given Character

In this post, you will learn a python program to replace all the vowels with a given character, special symbol (*), number, or space with a detailed explanation and example.

Question may be asked like:

Write a python program to replace all vowels of the String with a given character

But before we write a program few programming concepts you have to know:

1. for loop
2. if-else
3. how to take user input

Source Code:

my_string = input('ENter your String : ')
my_char = input('ENter your character : ')

vowels = ['a','e','i','o','u','A','E','I','O','U']

new_string = ''
for i in my_string:
    if i in vowels:
        new_string +=my_char
    else:
        new_string += i

print(new_string)

Output:

ENter your String : allinpython ENter your character : % %ll%npyth%n

Let’s solve a few more problems related to this for practice.

Write a python program to replace all vowels with ‘*’

Before writing this program you should know about:

1. for-loop
2. if-else

Source Code:

my_str = input('ENter your String : ')
my_char = '*'

vowels = ['a','e','i','o','u','A','E','I','O','U']

new_str = ''
for i in my_str:
    if i in vowels:
        new_str +=my_char
    else:
        new_str += i

print(new_str)

Output:

ENter your String : this is the demo th*s *s th* d*m*

Write a python program to replace all vowels with a given Number Using a while loop

Before writing this program you should know about:

1. for-loop
2. if-else
3. how to take user input

Source Code:

string = input('Enter your string : ')
num = int(input('Enter your number : '))

vowels = ['a','e','i','o','u','A','E','I','O','U']

result = ''
i = 0
while i < len(string):
    if string[i] in vowels:
        result += str(num)
    else:
        result += string[i]
    i+=1

print(result)

Output:

Enter your string : Learn python programming Enter your number : 9 L99rn pyth9n pr9gr9mm9ng

Write a python program to replace all vowels with a Space Using a while loop

Before writing this program you should know about:

1. for-loop
2. if-else

Source Code:

input_string = input('Enter your string : ')
space = ' '

vowels = ['a','e','i','o','u','A','E','I','O','U']

result = ''
i = 0
while i < len(input_string):
    if input_string[i] in vowels:
        result += space
    else:
        result += input_string[i]
    i+=1

print(result)

Output:

Enter your string : allinpython ll npyth n

Python program to replace the first occurrence of a vowel with a given Character

Before writing this program you should know about:

1. for loop
2. if-else
3. Python list
4. join method of the string

Source Code:

input_string = input('Enter your string : ')
my_char = input('Enter your character: ')

vowels = ['a','e','i','o','u','A','E','I','O','U']

for i in vowels:
    v_index = input_string.find(i)   #find index of vowel (first occurrence) 
    if  v_index >= 0: 
        break

input_string = list(input_string)  # convert string into list
input_string[v_index] = my_char  # replace vowel

new_str = ''.join(input_string)   # cobvert list in string again
print(new_str) # result

Output:

Enter your string : raama Enter your character: & r&ama