Tutorial Gateway

Python Program to Reverse String

Write a Python program to Reverse String using For Loop, while loop, and Functions with an example.

Python Program to Reverse String using For Loop

This program allows the user to enter a string. Next, this Python reverse string code reverses the string using For Loop.

TIP: Please refer String article to understand everything about Python Strings.

# Python Program to Reverse String
string = input("Please enter your own String : ")

string2 = ''

for i in string:
    string2 = i + string2
    
print("\nThe Original String = ", string)
print("The Reversed String = ", string2)
Python Program to Reverse String 1

From the above reverse a string program screenshot you can observe that, string = Python

For Loop First Iteration: for i in string
=> for P in Python
string2 = P + string=> P + ”

Second Iteration: for y in Python
string2 = y + P => yP

Do the same for the remaining iterations.

Reverse String using While Loop

This string reverse program using while loop is the same as above. However, we just replaced the For Loop with While Loop. Here, len is a string function used to find string length.

# Python Program to Reverse String
string = input("Please enter your own String : ")

string2 = ''
i = len(string) - 1

while(i >= 0):
    string2 = string2 + string[i]
    i = i - 1
    
print("\nThe Original String = ", string)
print("The Reversed String = ", string2))
print("The Given String in Lowercase =  ", string1)
Python Program to Reverse String 2

Reverse a String using Recursion

In this reverse string code, we are doing string reverse by calling the function recursively.

# Python Program to Reverse String

def StringReverse(str1):
    if(len(str1) == 0):
        return str1
    else:
        return StringReverse(str1[1:]) + str1[0]

string = input("Please enter your own String : ")

string2 = StringReverse(string)
print("\nThe Original String = ", string)
print("The Reversed String = ", string2)
Python Program to Reverse String 3

String Reverse using Function

It is another way of reversing a string using functions.

# Python Program to Reverse String

def StringReverse(str1):
    str2 = str1[::-1]
    return str2

string = input("Please enter your own String : ")

string2 = StringReverse(string)
print("\nThe Original String = ", string)
print("The Reversed String = ", string2)
Python Program to Reverse String 4