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!
Print Hello, World!
Practice basic output by printing a message.
Add Two Numbers
Add two given numbers and print their sum.
Check if a Number is Positive, Negative, or Zero
Determine whether a given number is positive, negative, or zero.
Print Multiplication Table
Print the multiplication table of a given number from 1 to 10.
Calculate Factorial
Compute the factorial of a given non-negative integer.
Check Palindrome
Determine whether a given string is a palindrome.
Find the Largest Number
Identify the largest number in a list of integers.
Count Vowels in a String
Count how many vowels are present in a given string.
Celsius to Fahrenheit Converter
Convert a temperature value from Celsius to Fahrenheit using the standard formula.
Reverse a String Without Built-in Functions
Manually reverse a string by iterating through it.
Prime Number Checker
Determine whether a given number is a prime.
GCD Calculator using Euclid’s Algorithm
Compute the greatest common divisor (GCD) of two integers using the Euclidean algorithm.
Fibonacci Sequence Generator
Generate the Fibonacci sequence up to a given number of terms.
Sum of All Numbers in a List
Calculate the total sum of all numeric elements in a list.
Remove Duplicates from a List
Remove all duplicate values from a list, keeping only the first occurrence of each value.
Count Character Occurrences
Count the number of times a specific character appears in a string.
Merge Two Dictionaries
Combine the contents of two dictionaries into one.
Check Anagrams
Determine whether two given strings are anagrams.
Find Square Root Without math.sqrt
Calculate the square root of a number without using built-in math functions.
Capitalize First Letter of Each Word
Transform a string so that each word starts with an uppercase letter.
Flatten a Nested List
Flatten a list that contains elements and one-level nested lists into a single list.
Basic Calculator
Build a simple calculator that performs arithmetic operations based on a given operator.
Bubble Sort and Insertion Sort
Implement two classic sorting algorithms: Bubble Sort and Insertion Sort.
Binary Search
Implement the binary search algorithm to efficiently locate a target value in a sorted list.
Find the Second-Largest Number
Identify the second-largest number from a list of integers.
Count Words in a Sentence (Ignore Punctuation)
Parse a sentence, remove punctuation, and count the number of words.
Implement Stack and Queue Using Lists
Understand how stack (LIFO) and queue (FIFO) structures work by implementing them using lists.
Define a Rectangle Class with Area and Perimeter
Practice object-oriented programming by defining a class with attributes and methods.