Python Coding Challenges & Practice Problems

Master Python in 2025 with free coding challenges, step-by-step solutions, and practice problems. Perfect for beginners to advanced learners. Start now!

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Super Easy

Print Hello, World!

Practice basic output by printing a message.

Super Easy

Add Two Numbers

Add two given numbers and print their sum.

Super Easy

Check if a Number is Positive, Negative, or Zero

Determine whether a given number is positive, negative, or zero.

Super Easy

Print Multiplication Table

Print the multiplication table of a given number from 1 to 10.

Super Easy

Calculate Factorial

Compute the factorial of a given non-negative integer.

Super Easy

Check Palindrome

Determine whether a given string is a palindrome.

Super Easy

Find the Largest Number

Identify the largest number in a list of integers.

Super Easy

Count Vowels in a String

Count how many vowels are present in a given string.

Super Easy

Celsius to Fahrenheit Converter

Convert a temperature value from Celsius to Fahrenheit using the standard formula.

Super Easy

Reverse a String Without Built-in Functions

Manually reverse a string by iterating through it.

Easy

Prime Number Checker

Determine whether a given number is a prime.

Easy

GCD Calculator using Euclid’s Algorithm

Compute the greatest common divisor (GCD) of two integers using the Euclidean algorithm.

Easy

Fibonacci Sequence Generator

Generate the Fibonacci sequence up to a given number of terms.

Easy

Sum of All Numbers in a List

Calculate the total sum of all numeric elements in a list.

Easy

Remove Duplicates from a List

Remove all duplicate values from a list, keeping only the first occurrence of each value.

Easy

Count Character Occurrences

Count the number of times a specific character appears in a string.

Easy

Merge Two Dictionaries

Combine the contents of two dictionaries into one.

Easy

Check Anagrams

Determine whether two given strings are anagrams.

Easy

Find Square Root Without math.sqrt

Calculate the square root of a number without using built-in math functions.

Easy

Capitalize First Letter of Each Word

Transform a string so that each word starts with an uppercase letter.

Easy

Flatten a Nested List

Flatten a list that contains elements and one-level nested lists into a single list.

Moderate

Basic Calculator

Build a simple calculator that performs arithmetic operations based on a given operator.

Moderate

Bubble Sort and Insertion Sort

Implement two classic sorting algorithms: Bubble Sort and Insertion Sort.

Moderate

Binary Search

Implement the binary search algorithm to efficiently locate a target value in a sorted list.

Moderate

Find the Second-Largest Number

Identify the second-largest number from a list of integers.

Moderate

Count Words in a Sentence (Ignore Punctuation)

Parse a sentence, remove punctuation, and count the number of words.