Python program to check if a string is a palindrome

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In this program. You will learn to check if a string is a palindrome

To understand this example, you should understand the followingPython programmingTopic:

• Python if ... else statements

• Python string

• Python string methods

A palindrome is a string that reads the same forwards or backwards.

For example, 'dad' is the same in either direction. Another example is 'aibohphobia', which is a literal fear of palindromes.

Source code

# Program to check if a string is a palindrome
my_str = 'aIbohPhoBiA'
my_str = my_str.casefold()
# Reverse the string
rev_str = reversed(my_str)
# Check if the string is equal to its reverse string
if list(my_str) == list(rev_str):
　　　print("This string is a palindrome.")
else:
　　　print("This string is not a palindrome.")

Output result

This string is a palindrome.

Note:To test the program, please change the value of my_str in the program.

In this program, we use the string stored in my_str.

By using the casefold() method, we make it suitable for unconditional comparison. Essentially, this method returns the lowercase version of the string.

We use the built-in function reversed() to reverse the string. Since this function returns a reversed object, we use the list() function to convert them to a list before comparison.

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