Python Comprehensions

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Welcome to the Treehouse Library

This is a sample catalog of all the courses we offer. Browse by topic or difficulty. Sign up today and get access to our entire library. Treehouse students get access to workshops, bonus content, conferences, and more.

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Treehouse offers a 7 day free trial for new students. Get access to 1000s of hours of content. Learn to code, land your dream job.

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View all Tracks

Popular Tracks

These are some of the most common tracks students start with.

• 55 hours

  Track

  Front End Web Development

  Learn to code websites using HTML, CSS, and JavaScript.

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  • Play

  • An entry-level salary for the technologies covered in this track is about $51,000 / yr on average.

  • Some companies that use these technologies regularly include: Google, Facebook, Yahoo, eBay, Amazon, and Treehouse.

• 14 hours

  Track

  Beginning Python

  Learn the general purpose programming language Python and build large and small applications and tools.

  • Explore
  • Play

  • An entry-level salary for the technologies covered in this track is about $70,000 / yr on average.

  • Some companies that use these technologies regularly include: Google, NASA, Nokia, IBM, Digg, Dropbox, Pinterest, Reddit, Yelp, Apple, and Amazon.

• 41 hours

  Track

  Full Stack JavaScript

  Learn JavaScript, Node.js, and Express to become a professional JavaScript developer.

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  • Play

  • An entry-level salary for the technologies covered in this track is about $65,000 / yr on average.

  • Some companies that use these technologies regularly include: Walmart, PayPal, Groupon, Airbnb.

Topics

Browse content by the topics that interest you most.

• AI
• JavaScript
• Databases
• Python
• Design
• React
• HTML
• CSS
• Data Analysis
• Java
• C#
• Android
• Computer Science
• PHP
• Quality Assurance
• APIs
• Security
• Digital Literacy
• Development Tools
• Business
• 21st Century Skills
• Ruby
• Machine Learning
• Learning Resources
• Go Language
• Equity, Diversity, and Inclusion (EDI)

Change Your Career, Change Your Life

With 100s of courses and more to come, Treehouse is the best way to learn how to code.

Start Your Free Trial View all 285

Courses

Browse courses across an array of topics and disciplines.

• • 1
  • 2
  • 3
  • 4
  2 hours Course

  Introduction to HTML and CSS

  | 87616 students

  Get started creating web pages with HTML and CSS, the basic building blocks of web development. HTML, or HyperText Markup Language, is a standard set of tags you will use to tell the web browser how the content of your web pages and applications are structured. Use CSS, or Cascading Style Sheets, to select HTML tags and tell the browser what your content should look like. Whether you are coding for fun or planning to start a career in web development, learning HTML and CSS is a great place to start.

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  • HTML
  • Beginner
• • 1
  • 2
  • 3
  • 4
  3 hours Course

  JavaScript Basics

  | 21528 students

  JavaScript is a programming language that drives the web: from front-end user interface design to server-side backend programming, you'll find JavaScript at every stage of a website and web application. In this course, you'll learn the fundamental programming concepts and syntax of the JavaScript programming language.

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  • JavaScript
  • Beginner
• • 1
  • 2
  • 3
  • 4
  3 hours Course

  HTML Basics

  | 49790 students

  Learn HTML (HyperText Markup Language), the language common to every website. HTML describes the basic structure and content of a web page. If you want to build a website or web application, you'll need to know HTML.

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  • HTML
  • Beginner
• • 1
  • 2
  • 3
  • 4
  3 hours Course

  Python Basics

  | 24195 students

  Learn the building blocks of the wonderful general purpose programming language Python.

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  • Python
  • Beginner
• • 1
  • 2
  • 3
  • 4
  3 hours Course

  CSS Basics

  | 9049 students

  In this course, we're going to learn the basics of CSS, one of the core technologies for designing and building websites and applications. No matter what kind of website or web application you want to build, you'll have to use CSS. If you haven't written much CSS, or even if you’ve never written CSS at all, don’t worry. That's what this course is for. We’ll start with basic CSS concepts, then gradually progress to more advanced topics and lessons.

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  • CSS
  • Beginner
• • 1
  • 2
  • 3
  • 4
  2 hours Course

  CSS Layout

  | 7116 students

  In this course, we're going to learn techniques for better control over our CSS layouts. We’ll cover how the CSS Box Model impacts the presentation of each HTML element, learn to control the position of each element onscreen, and even begin to adjust our layouts for different screen sizes and environments.

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  • CSS
  • Beginner
• • 1
  • 2
  • 3
  2 hours Course

  JavaScript and the DOM

  | 3846 students

  JavaScript lets you create interactive web pages which can respond to a user's actions. In this course, you'll learn how to bring web pages to life using the power of JavaScript.

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  • JavaScript
  • Beginner
• • 1
  • 2
  • 3
  • 4
  2 hours Course

  React Basics

  | 8204 students

  React is a JavaScript library for building user interfaces. React makes building and maintaining your application's user interface faster and easier by breaking it up into smaller, reusable components. It also helps eliminate the complexity of updating your DOM elements when the user interacts with your application.

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  • JavaScript
  • Intermediate
• • 1
  • 2
  • 3
  2 hours Course

  SQL Basics

  | 28110 students

  In SQL Basics, we’ll take a look at what databases are and how you can retrieve information from them. Databases can store massive amounts of information to be retrieved at a later date. Databases act as the memory for dynamic web sites or mobile apps.

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  • Databases
  • Beginner
• • 1
  • 2
  • 3
  • 4
  68 min Course

  Node.js Basics

  | 627 students

  In this course we will create two command line applications using the popular server-side JavaScript platform Node.js. We'll be creating an application to retrieve a student's Treehouse profile information and be working with a dictionary API to retrieve definitions of a given word.

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  • JavaScript
  • Intermediate
• • 1
  • 2
  • 3
  3 hours Course

  Introduction to Git

  | 10807 students

  Git is a version control system - it helps you manage the different versions of your project files, and helps keep your work safe. This course will show you how Git works, and how to upload your projects to GitHub.

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  • Dev Tools
  • Beginner
• • 1
  • 2
  • 3
  • 4
  • 5
  3 hours Course

  C# Basics

  | 3301 students

  C# is the most popular programming language in the Microsoft ecosystem of products. C# code is designed to run fast and to be easily maintainable. In C# Basics, we'll learn how to work with C# to write simple programs.

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  • C#
  • Beginner