Practice Assignments | CodeHS

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Python Practice Problems

Basics

LEVEL 1

Splitting into Groups

Hours to Seconds

Divisible By 10?

Area of a Triangle

Divisible By Value

These Numbers Be Cursed!

Hello Hello Hello

Simple Arithmetic Calculation

Leftover Calculator

Rocket Fuel Efficiency

Boolean Logic with Conditions

Is It a Leap Year?

Alien Identification

Calculate the Price

Greet the Artist

Full Name Display

Mystery Clue Combo

Double the value

Average Team Score

Triangle Area Calculator

Cylinder Volume and Surface Area

Welcome to the Wizard School

Calculate Spaceship Fuel

Race Finish Time

Tik Tok Fame Calculator

Concert Ticket Discount

Scout's Nut Count

Fuel Calculation

Functions

The Identity Function

Multiple Arguments

Default Arguments

Variable Arguments

Calculate Average of Three Numbers

Calculate Rocket Speed

Format an Address

Temperature Check

Robot Battery Alert

Song Duration Converter

Battle Score Calculator

Snapstreak Timer

Strings

LEVEL 1

First Character

Broken Caps Lock

Costume Contest

Team Name Formatter

Reverse a String

Count Sharp Notes

Secret Code Decoder

Rock Descriptions

Math

LEVEL 1

Consecutive Number

Sum Less than 100?

Perimeter of a Rectangle

Pythagorean's Theorem

Number of weeks of Summer left

Pizza Party Leftovers

Rocket Speed Calculation

Loops

LEVEL 1

How many times?

Count Characters

Sum of Even Numbers in a List

Rocket Launch Countdown

Temperature Status

Scientific Trial Successes

Treasure Tracker

Potion Brewing Countdown

Count Vowels in a Phrase

Count A's in a Word

Countdown Timer

Lists

LEVEL 1

Lunchtime Satisfaction

Check Availability

Get Tallest Tree

Power-Up Collector

Dictionaries

LEVEL 1

return all of the keys

switch the values

Players with triple doubles

Revolutionary War of 1776

Most Frequent Char

Word Frequencies

Dictionary Manipulation

Restaurant Menu

Conditionals

LEVEL 1

Soccer Game Result

Flight Status Notification

Movie Recommendation Filter

Check Gym Access

Check Exam Eligibility

Pet Adoption Eligibility

Can Get Library Card

Can Watch Movie

Vegan Friendly?

Strings

LEVEL 2

Switch the Words

Split the String

Superhero Names

TikTok Hashtags

Find Last Substring Index

Count Unique Vowels

Substring Difference

Secret Code Breaker

Longest Palindromic Substring

Rap Lyric Formatter

Math

LEVEL 2

Highest of Three

Basic Calculator

Add Odd Numbers

Total Pay, Yearly

Splitting the Check

Road Trip Average Speed

Total Pay, Monthly

Should Bob play the game?

Factorial Modulo Calculation

Space Mission Fuel Calculation

Solve Quadratic Equation

Loops

LEVEL 2

Fibonacci sequence

Modified count by 2

Dice combinations

Multiplication table

Tic-Tac-Toe board reviewer

Sum of Even Squares

Recursive Countdown

Reverse a String

Counting Vowels

Double the Digits

Recipe Repeater

Streamer Hype Tracker

Lists

LEVEL 2

Replace the Zeros

Filter out Zeros

Longest length-palindrome

Pirate Shopping List

Road Trip Playlist Organization

Counting Anagrams

Assignment Selection

Year Proximity Sort

Remove Duplicates

Alien Fruit Scanner

Merge Two Sorted Lists

Odd Numbers Summation

Reorder Playlist

First and Last Number

Treasure Map Tracker

Cafeteria Menu Tracker

Movie Rating Filter

Dictionaries

LEVEL 2

Combine dictionaries

Word Count Tracker

Best way to complete chores

Shopping on a Budget

Fun With Friends

Prom King and Queen

Feeding Time at the Zoo

Merging Dictionaries

Track Movie Ratings by Genre

Luka Doncic Stats Analyzer

Conditionals

LEVEL 2

Determine Triangle Type

Treasure Chest Choice

Pick a Magic Wand

Late to Class Excuse Evaluator

Lists

LEVEL 3

Filter out Evens

Filter out Small Strings

Filter out Even Indices

Sum the Lengths

Strings

Capitalize Even Letters

Even Characters

Add Secret Message

Correct Capitalization

Dictionaries

LEVEL 3

Fun With Friends Part 2

Basketball Analysis

Functions

LEVEL 2

Letter Grades Part 2

Expensive Names

Functions

LEVEL 3

Collatz Chain Iterations

Koko Wants Bananas

Math

LEVEL 3

Basketball Score

CodeHS Practice FAQ

Still have questions? We’re happy to answer them, just reach out to hello@codehs.com!

What is a CodeHS Practice problem?

CodeHS Practice is a curated list of practice problems to help students gain a stronger understanding of basic programming skills. Each Practice problem is autograded meaning students' code will be run through a series of Test Cases to ensure that their code is functionally and stylistically sound, and accomplished the goals of a given exercise.

Who can access CodeHS Practice problems?

Anyone can access the CodeHS Practice problems for free—no CodeHS account required! Simply go to codehs.com/practice and start coding. Note: If you want to track progress, you’ll need to create a CodeHS account.

What programming languages are available?

CodeHS Practice has the most robust coding problems in a variety of programming languages including:

JavaScript
Java
Python
C++
SQL

What are the different types of practice problems?

We offer two types of practice problems.

Coding Practice - Students write code for a single method or function that should match the expected output.

Parsons Problems - Students drag the lines of code into the correct order to match the expected output.

What do the status colors mean?

Grey/Unopened - the student has not yet opened the activity

Yellow/Started - the student has opened and worked on the activity, but has not completed it

Green/Completed - the student has completed the exercise

What do the points mean?

The point value for each problem indicates the difficulty level. (1 = easy; 10 = difficult). You can see the points by hovering over the dot next to the exercise.

Which version of Python is used in Practice?

We use Python 3.