Even or odd?
Return 'even' or 'odd' for an integer.
Clamp a Number to a Range
Implement a clamp function that returns a value within a specified range.
Leap Year Checker
Implement a function that decides whether a year is a leap year according to the standard Gregorian rules.
Grade from Score
Write a function that maps a numeric score to its letter grade using standard grading thresholds.
Sign of a Number
Write a function that returns the sign of a number as a string.
Max of a variable-length list
Implement a function that returns the maximum value from a list of numbers without using max().
Classify triangle by sides
Write a function that classifies a triangle based on three side lengths.
Between inclusive
Write a function that returns True if a number is between two given bounds, inclusive of the bounds.
Replace negatives with zero
Implement a function that replaces all negative numbers in a list with zero.
Leap Year Checker
Implement a function that returns True if a year is a leap year according to the Gregorian calendar rules.
Grade Calculator
Implement a function that converts a numeric score to a letter grade using a standard scale.
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.
Max of three numbers
Implement a function that returns the maximum of three numbers using comparisons.
Sign of a number
Write a function sign_of_number that returns -1 for negatives, 0 for zero, and 1 for positives.
Countdown printer
Implement a function that prints a countdown from a given number down to 1, then returns 'Go!'.
Count Positives
Count the positive numbers in a list of integers.
Is divisible by?
Create a function that returns True if a is divisible by b with no remainder, with a clear definition of edge cases.
Linear Search Implementation
Implement a linear search function that returns the index of the first occurrence of a target in a list, or -1 if not found.
Validate date format
Return True if input string is exactly YYYY-MM-DD and a real calendar date.
Palindromic Number Check
Write a function to check if a given integer is a palindrome.
Hexagonal Number
Write a function to check if a positive integer is a hexagonal number.
Showing 21 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.