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Python Coding
Challenges

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925 challenges 556 easy 323 medium 46 hard

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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

FizzBuzz, precisely

Return a newline-separated string for 1..n: Fizz, Buzz, FizzBuzz, or the number.

control flow strings modulo

Python Basics easy

Hello, name!

Implement a function that returns a personalized greeting for a given name.

strings function formatting

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

Countdown printer

Implement a function that prints a countdown from a given number down to 1, then returns 'Go!'.

loops conditionals function-definition

Python Basics easy

Print Pyramid Pattern

Implement a function that returns a centered asterisk pyramid as a list of strings.

loops strings pattern-printing

Python Basics easy

Count word occurrences

Write a function that takes a sentence and returns a dictionary of word counts.

strings counting dictionaries

Python Basics easy

Pathlib Operations: File Path Basics

Practice using pathlib to manipulate file paths and extract components.

pathlib file-paths strings

Python Basics easy

Validate date format

Return True if input string is exactly YYYY-MM-DD and a real calendar date.

validation strings dates

Python Basics easy

Palindromic Number Check

Write a function to check if a given integer is a palindrome.

numbers strings conditionals

Python Basics medium

Longest Substring with K Repeating Characters

Return the length of the longest substring of a given string in which every character appears at least K times.

strings sliding-window substring

Python Basics easy

Parse environment variables

Write parse_env_vars that parses KEY=VALUE lines into a dict, converting booleans/numbers and ignoring comments.

strings parsing dictionaries

Python Basics easy

Rank Employees by Salary

Sort a list of employee dictionaries by salary descending, tie-break by name, and return ranked strings.

sorting dictionaries lists

Python Basics easy

Logging Filter

Given a list of log entries, return those matching a given severity level and containing a keyword.

strings conditionals loops

Python Basics easy

Order by Name

Implement a function that sorts a list of names alphabetically ignoring case, returning a new list.

sorting strings lists

Python Basics easy

Validate Password Strength

Implement a function that validates password strength based on clear rules.

strings validation conditions

Showing 1–15 of 15 challenges · Python Basics

Python Basics — Python coding challenges

What you will find here

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.