Python Program to Replace Characters in a String

Write a Python program to Replace Characters in a String using the replace function and For Loop with an example.

Python Program to Replace Characters in a String 1

This program allows the user to enter a string, character to replace, and new character you want to replace with. Next, we used a built-in string function called replace to replace user given character with a new character.

# Python program to Replace Characters in a String
 
str1 = input("Please Enter your Own String : ")
ch = input("Please Enter your Own Character : ")
newch = input("Please Enter the New Character : ")

str2 = str1.replace(ch, newch)

print("\nOriginal String :  ", str1)
print("Modified String :  ", str2)

Program to Replace String Characters Example 2

In this program program, we used For Loop to iterate every character in a String. Inside the For Loop, we are using If Statement to check whether the String character is equal to ch or not. If true, Python replace it with Newch

# Python program to Replace Characters in a String
 
str1 = input("Please Enter your Own String : ")
ch = input("Please Enter your Own Character : ")
newch = input("Please Enter the New Character : ")

str2 = ''
for i in range(len(str1)):
    if(str1[i] == ch):
        str2 = str2 + newch
    else:
        str2 = str2 + str1[i]

print("\nOriginal String :  ", str1)
print("Modified String :  ", str2)

Python replace string characters output

Please Enter your Own String : tutorial gateway team
Please Enter your Own Character : t
Please Enter the New Character : P

Original String :   tutorial gateway team
Modified String :   PuPorial gaPeway Peam

Python Replace Characters in a String Example 3

This Python replaces string Characters code is the same as the above example. However, we are using For Loop with Object.

# Python program to Replace Characters in a String
 
str1 = input("Please Enter your Own String : ")
ch = input("Please Enter your Own Character : ")
newch = input("Please Enter the New Character : ")

str2 = ''
for i in str1:
    if(i == ch):
        str2 = str2 + newch
    else:
        str2 = str2 + i

print("\nOriginal String :  ", str1)
print("Modified String :  ", str2)

Python replace string characters output

Please Enter your Own String : python programming examples
Please Enter your Own Character : o
Please Enter the New Character : G

Original String :   python programming examples
Modified String :   pythGn prGgramming examples