Palindrome in Python (Complete Guide)

"Palindromes are a reminder that in programming, as in life, the way back often matters just as much as the way forward."

Palindromes in Python are a classic topic in programming.
A palindrome is a word, phrase, or number that reads the same forward and backward.

For example:

• "radar"
• "oso" (Spanish for "bear")
• 12321

In this guide, you will learn everything you need to work with palindromes in Python, from simple examples to advanced algorithms.

What is a palindrome

A palindrome is a sequence of characters or digits that remains the same when reversed.
In Python, we can check this easily using string operations and loops.

Basic example:

def is_palindrome(text: str) -> bool:
    text = text.lower().replace(" ", "")
    return text == text[::-1]

print(is_palindrome("radar"))   # True
print(is_palindrome("python"))  # False

Contents of this guide

• Palindrome in strings
• Palindrome in numbers
• Recursive verification
• Palindromes in word lists
• Exercises and common problems
• Advanced palindrome algorithms

Palindromes in interviews and programming practice

• They are frequent exercises in technical interviews.
• They help to understand concepts like slicing, recursion, loops, and data structures.
• They allow you to practice string manipulation and algorithm optimization.

Step-by-step example

A simple example to check if a number is a palindrome in Python:

def is_palindrome_number(n: int) -> bool:
    return str(n) == str(n)[::-1]

print(is_palindrome_number(12321))  # True
print(is_palindrome_number(12345))  # False

Learning how to work with palindromes in Python will not only help you solve basic exercises but also practice more advanced techniques such as recursion and dynamic programming.

Explore each section of this guide and put the examples into practice with your own challenges.