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All Python Basics Strings & Text Lists & Arrays Dicts & Sets Functions & Closures OOP & Classes Data Structures & Algorithms Advanced Python Iterators & Generators Decorators & Context Managers Error Handling & Exceptions Regular Expressions Math & Number Theory Bit Manipulation Dynamic Programming Trees & Binary Trees Graphs & Graph Algorithms Recursion & Backtracking Greedy Algorithms Binary Search Two Pointers & Sliding Window Stacks & Queues Heaps & Priority Queues Linked Lists Matrix & 2D Arrays Datetime & Time Calculations Data Formats & Parsing SQL & SQLite Numpy & Vectorized Computing Cryptography & Hashing

Python Basics easy

Temperature converter

Convert Celsius to Fahrenheit: F = C × 9/5 + 32.

arithmetic floats

Python Basics easy

Sum of digits

Return the sum of all decimal digits of a non-negative integer.

arithmetic loops

Python Basics easy

Sum numbers from 1 to n

Implement a function that computes the sum of all integers from 1 to n.

sum loop arithmetic

Python Basics easy

Seconds to Hours Minutes Seconds

Convert total seconds into a zero-padded HH:MM:SS format.

arithmetic divmod formatting

Python Basics easy

Digit count of an integer

Given an integer, return the number of digits it has, handling negatives and zero correctly.

integers loops arithmetic

Python Basics easy

Toggle a boolean n times

Apply boolean toggling n times and return the final boolean value.

booleans arithmetic modulo

Python Basics easy

Minutes to Hours: Time Conversion Helper

Write a function that converts minutes into a human-readable 'Xh Ym' string, with special cases for zero and whole hours.

arithmetic formatting conditionals

Python Basics easy

Simple Interest Calculator

Implement a function that calculates simple interest given principal, annual rate, and time in years.

arithmetic floats basics

Python Basics easy

Tip Calculator

Write a function that calculates the total bill after adding a given tip percentage.

arithmetic rounding basics

Python Basics easy

Absolute Difference

Implement a function that returns the absolute difference between two numbers.

absolute value arithmetic function

Python Basics easy

Sum from 1 to n

Write a function that returns the sum of all integers from 1 to n (inclusive).

math arithmetic sum

Python Basics easy

Round to nearest ten

Write a function that rounds any integer to the nearest multiple of ten.

arithmetic rounding integers

Python Basics easy

Fahrenheit to Celsius

Implement a function that converts degrees Fahrenheit to degrees Celsius.

temperature arithmetic conversion

Python Basics easy

Speed Converter

Write a function to convert speeds between kilometers per hour and meters per second.

arithmetic conversion function

Python Basics easy

Area of Rectangle

Write a function that returns the area of a rectangle given its width and height.

arithmetic function numbers

Python Basics easy

Perimeter of triangle

Given three side lengths, return the perimeter (sum) of the triangle.

arithmetic geometry basics

Python Basics easy

Volume of Cube

Write a Python function that returns the volume of a cube given its side length.

arithmetic return function

Python Basics easy

Modulo Remainder

Implement a function that returns the remainder of a divided by b without using the modulo operator.

modulo arithmetic integers

Python Basics easy

Digit Count

Count the number of digits in an integer using arithmetic, without string conversion.

numbers loops math

Python Basics easy

Last Digit Extractor

Write a function that returns the last digit of a non-negative integer using the modulo operator.

integers modulo arithmetic

Showing 20 challenges · easy · Python Basics

Python Basics — Python coding challenges

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This page lists python basics challenges — real Python problems you solve in the browser IDE with instant test feedback. Each challenge includes a clear brief, starter code, and automated checks.

Challenges vs tutorials and quizzes

Challenges test what you can build under constraints. For guided teaching, use our Python tutorials. For quick checks, try quizzes or copy snippets from code samples.