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Scratch is a free programming language and online community where you can create your own interactive stories, games, and animations.

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Controls
Contains flow control, messaging, looping, variables, and conditionals.
each frame frame elapsed set to update to loop over broadcast message with data when I receive message with data if if else log Ask and store answer as ignore blocks comment alert Sprites
Sprites are images or shapes that can have momentum and heading direction applied to them for animation and games.
sprite with accelerate by set velocity to get velocity get speed get X velocity get Y velocity get X position get Y position rotate by rotate to degrees move move to draw apply force bounce at edge wrap at edge stop at edge is collision Sound
Play and manipulate existing sound files or synthesize new sounds.
audio note octave beats play chord synth note octave-+ play audio play notes synth mml set tempo pause keys synth sound effect Arrays
Arrays are lists of things. You can add, remove, and loop over these lists.
create array -+ copy array item from at index combine with Make string from separated by append prepend length remove item at remove last value remove first value reverse Boolean
Booleans are either True or False. There are many operations for comparing and mixing them.
true false and or xor not Date Stage
Stage is the area where scripts are performed.
clear to Stage Width Stage Height Center x Center y Center point Random x Random y Colors
There are several ways to specify colors.
grey fill style stroke style shadow color shadow blur Images
Images are pictures loaded from the web. They can be positioned and resized.
image from url blank image with width height image width image height set width set height scale by flip horizontal flip vertical flip both set size draw at draw on Math
In addition to performing math on numbers you can also use many operations on arrays and vectors too.
as number + − × ÷ = ≠ < ≤ > ≥ modulus round absolute value sign of floor ceiling to the power of square root of cube root of root of to degree logarithm of to base max min sine cosine tangent arcsine arcosine arctangent pi e tau degrees to radians radians to degrees Random
There are many types of randomness in Waterbear.
random float random int from to random item from Vectors (Points)
Waterbear vectors are x,y coordinates that can be used as points, but also have a direction and magnitude (useful for speed, acceleration, distance).
vector at x y vector at angle magnitude rotate to degrees rotate by degrees degrees magnitude x y × + normalize random unit vector from array random point unit vector <1,1> zero vector <0,0> as array Objects
Objects are general-purpose containers where you can associate names (keys) with objects (values) like in a dictionary.
empty object key with value -+ from value of keys from Strings
Strings are simple bits of text. You can search them, combine them, and break them up.
convertto string split on separator concatenate with repeat times get character from get character from end of is substring of position of in trim whitespace of convert to uppercase convert to lowercase matches doesn't match starts with ends with
The blocks below are for writing your text to the screen.
font align text to the text baseline fill text x y fill text x y max width stroke text x y stroke text x y max width width of text Shapes
Shapes are pictures made by drawing a geometric shape rather than loading an image file.
draw the shape line width line cap style line join style circle at radius polygon with points -+ line from to clip with path type -+ last point bezier point at position start point end point first control point second control point tangent to bezier curve at position start point end point first control point second control point Rects
It turns out to be frequently useful to be able to represent a rectangle.
position size from array position of size of x of y of width of height of Input
Programs can get input from the mouse, touch, key presses, and more.
Pointer x Pointer y Pointer Down Key Pressed? when key pressed when pointer pressed when pointer released when pointer moves tilt direction Geolocation
Where in the world is your progam running?
my current location when my location changes my current location latitude of longitude of altitude (m) of direction from north of speed (m/s) of Sizes
A size captures both width and height in one convenient package.
width from size width units height from size height units size as array

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ControlsContains flow control, messaging, looping, variables, and conditionals. each frame frame elapsed set to update to loop over broadcast message with data when I receive message with data if if else log Ask and store answer as ignore blocks comment alert SpritesSprites are images or shapes that can have momentum and heading direction applied to them for animation and games.

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An inside look from Team CodePen on what it's like running a web business. Everything from server infrastructure, to day-to-day operations, to new feature development.

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This is a simple online Python interpreter, built using the Skulpt engine (slightly modified by kwalsh).

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Please note that this dual license only applies to the part of Skulpt that is included in the runtime, and not necessarily to surrounding code for build processing or testing.

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This one has some sample codes

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Python Tutor code visualizer: Visualize code in Python, JavaScript, C, C++, and Java

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bugs & unsupported features | why are there ads?

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Skip to content

Build software collaboratively with the power of AI, on any device, without spending a second on setup

Join 20 million software creators building on Replit

Generate, edit, and explain code with Replit AI. Collaborate in our real-time multiplayer editor. Build, test, and deploy directly from the browser.

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Replit: The software creation platform. IDE, AI, and Deployments

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Run code live in your browser. Write and run code in 50+ languages online with Replit, a powerful IDE, compiler, & interpreter.

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Useful for procedures

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A huge THANK YOU to all the contributors who’ve helped with translating Lightbot! All translations are provided by Lightbot fans!

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How Language Shapes the Way We Think | Lera Boroditsky | TED

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2 adding a first component and changing properties

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3 Naming conventions adding markers and text to speech

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6a Taking project further add new screen

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https://thimble.mozilla.org/en-US/

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6a Taking project further sense location button

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Python Tkinter Checkbutton - Learn Python in simple and easy steps starting from basic to advanced concepts with examples including Python Syntax Object Oriented Language, Methods, Tuples, Tools/Utilities, Exceptions Handling, Sockets, GUI, Extentions, XML Programming.

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Blockly Basics

The Blockly library adds an editor to your app that represents coding concepts as interlocking blocks. Blockly generates simple, syntactically-correct code from the blocks in the editor, which your app can use to run games, control robots, or do anything else your imagination can concieve.

The Blockly library adds an editor to your app that represents coding concepts as interlocking blocks. It outputs syntactically correct code in the programming language of your choice. Custom blocks may be created to connect to your own application.

Blockly is being used by hundreds of projects, most of them educational:

Blockly for Web

Blockly in a browser allows web pages to include a visual code editor for any of Blockly's five supported programming languages, or your own. In Blockly Games, pictured here, users can solve a maze using Blockly's editor on the right.

Blockly is...

Pure JavaScript library.

100% client side. No server side dependencies.

Compatible with all major browsers: Chrome, Firefox, Safari, Opera, and IE.

Highly customizable and extensible.

Blockly User Summit 2021

The virtual Blockly User Summit took place April 28-29, 2021.

We had around 80 members of the Blockly community attend with 16 tech talks on Blockly and its applications.

All of the summit talks are available on YouTube.

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A JavaScript library for building visual programming editors.

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Your job is to stop the incoming enemies from getting past your defenses. Unlike other tower defense games, you must position your towers using CSS!

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I'm an Educator

I'm a Student

With our unique approach, students embrace learning as they play and write code from the very start of their adventure, promoting active learning and a growth mindset.

Our custom code engine and interpreter is designed for beginners, teaching true Python, JavaScript, and C++ programming languages using human, beginner-friendly terms.

Our products have helped over 20 million students enjoy learning Computer Science, teaching them to be critical, confident, and creative learners. We engage all students, regardless of experience, helping them to realize a pathway to success in Computer Science.

Ozaria Classroom

Ozaria is our brand new adventure game and your turnkey solution for teaching Computer science. Our student-facing __slides__ and teacher-facing notes make planning and delivering lessons easier and faster.

CodeCombat Classroom

Our original game teaches real-world skills through the power of play. The scaffolded curriculum systematically builds on student's experiences and knowledge as they progress.

__codecombatHome__ offers your child a fun and engaging way to advance their coding skills. With access to over 530 levels and exclusive features like pets, premium-only items, and heroes, your child can fully immerse themselves in the world of coding. They can even design games to challenge their friends, build websites and apps to share, and create private teams to compete on a group leaderboard, all in a safe and interactive environment that encourages learning and socialization.

Scott Baily , Bobby Duke Middle School

CodeCombat Worlds

Embark on a 3D coding adventure in Roblox, where you can program pets, play with friends, and develop games all while playing one. Join the CodeCombat community and unleash your creativity in the metaverse!

CodeCombat AI League

Competitive coding has never been so epic with this educational esports league, uniquely both an AI battle simulator and game engine for learning real code.

Latthaphon Pohpon, Parent

Learners

Lines of Code

Teachers

Countries

Name any program online, I've tried it. None of them match up to CodeCombat & Ozaria. Any teacher who wants their students to learn how to code... start here!
Joey, 10th Grade

Even though the class starts every Saturday at 7am, my son is so excited that he wakes up before me! CodeCombat creates a pathway for my son to advance his coding skills.

1. Create your Teacher Account

2. Create a class

3. Add students

4. Sit back and watch your students have fun learning to code

I've always had aspirations of designing video games and learning how to code ... this is giving me a great starting point.

We currently support Python, JavaScript, C++, Java, and Lua.

Why should you choose Python?
Python is both beginner-friendly and currently used by major corporations (such as Google). If you have younger or first-time learners, we strongly recommend Python.

Why should you choose JavaScript?
JavaScript is the language of the web and is used across nearly every website. You may prefer to choose JavaScript if you are planning to also study web development. We've also made it easy for students to transition from Python to JavaScript-based web development.

JavaScript's syntax is a little more difficult for beginners than Python, so if you cannot decide between the two, we recommend Python.

Absolutely! We've spent time consulting with education specialists to craft classroom curriculum and materials specifically for teachers who are using CodeCombat or Ozaria without any prior computer science experience themselves. Many schools are implementing CodeCombat and/or Ozaria as the main computer science curriculum.

Yes! Check out our __clever__ for more details on how to get started.

Yup! Be sure to use the Google Single Sign-On (SSO) Modal to sign up for your teacher account. If you already have an account using your Google email, use the Google SSO modal to log in next time. In the Create Class modal, you will see an option to Link Google Classroom. We only support rostering via Google Classroom at this time.

Note: you must use Google SSO to sign up or log in at least once in order to see the Google Classroom integration option.

We customize solutions for schools and districts and work with you to understand your use case, context, and budget. __contact__ for further details! See also our __funding__ for how to leverage CARES Act funding sources like ESSER and GEER.

CodeCombat and Ozaria run best on computers with at least 4GB of RAM, on a modern browser such as Chrome, Safari, Firefox, or Edge. Chromebooks with 2GB of RAM may have minor graphics issues in later courses. A minimum of 200 Kbps bandwidth per student is required, although 1+ Mbps is recommended.

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CodeCombat: Learn to Code by Playing a Game

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Learn programming with a multiplayer live coding strategy game for beginners. Learn Python or JavaScript as you defeat ogres, solve mazes, and level up. Open source HTML5 game!

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Lists
Python offers a tool called lists to keep track of related "things," or values.

Loops
While loops tell the computer to do something while something else is true.

Dictionaries
Dictionaries are another tool, built-in to Python, to store things. Things in dictionaries can be alike, too, though dictionaries are best used to translate keys to values.

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Learn Python - Free Interactive Python Tutorial

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learnpython.org is a free interactive Python tutorial for people who want to learn Python, fast.

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Introduction

You are going to create a Spot the Difference game with a big surprise, to scare all your friends.

What you will make

Play the video to see what you will make.

While the player is searching for all the differences in an image, suddenly a scary image will appear, and a blood-curdling scream will resound!

What you will learn

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You are going to create a Spot the Difference game with a big surprise, to scare all your friends. Play the video to see what you will make. While the player is searching for all the differences in an image, suddenly a scary image will appear, and a blood-curdling scream will resound!

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A fun game to help you learn and practice CSS selectors.

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Thimble by Mozilla - An online code editor for learners & educators.

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Thimble is an online code editor that makes it easy to create and publish your own web pages while learning HTML, CSS & JavaScript.

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The border CSS property is a shorthand for setting all individual border property values in a single declaration: border-width, border-style, and border-color.

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Write, Save, Compile, Run and Share Python3 Code Online

Try our Online Python Compiler | Run Python Code Online (latest version Python v3.6.2) to Edit, Run and Share your Python3 Code directly from your browser. This online development environment provides you the latest version Python v3.6.2.

How to give program Input?

The latest version of Coding Ground allows to provide program input at run time from the termnial window exactly the same way as you run your program at your own computer. So simply run a program and provide your program input (if any) from the terminal window available in the right side.

Keyboard Shortcuts

How to Save Python3 Project Online

You can save your Python3 Project with us so that you can access this project later on. To save a project you will need to create a login Id with us. So before you save a project, please create a login Id using a link given at the top right corner of this page.

How to Share Python3 Project Online

You can use this feature to share your Python3 Code with your teachers, classmates and colleagues. Just click Share Button and it will create a short link, which can be shared through Email, WhatsApp or even through Social Media. A shared link will be deleted if it has been passive for almost 3 months.

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Online Python Compiler | Run Python Code Online

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Online Python Compiler to Execute and Run Python Code Online - The best Online Python Compiler and Editor to provide an easy to use and simple IDE (Integrated Development Environment) to Edit, Save, Compile, Run and Share Python Code with in your browser itself.

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python programming language object oriented web free open source software license documentation download community

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The official home of the Python Programming Language

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Python in the browser. No installation required.

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Founder at Chaptr Global | Pioneering income-share agreements for tech education in emerging markets

New to Python? Or are you already a seasoned developer looking to boost and advance your Python knowledge? We have compiled a bull-pack of recommended resources for anyone looking to learn Python Programming. We have tailored these resources to be suitable for Python developers of all levels but the resources listed will be most-applicable to those still early on the learning curve or already familiar with the basics but not really advanced.

First, let us explore the ideal Python Pathway - what is your path from beginner to advanced and what career focus areas are available with Python.

1. Learn Python Fundamentals: As with any language, first, you need to grasp the basics, from Python syntax to the Python PEP-8 conventions and know how to use the language. Here you will explore variables, expressions, operators, conditionals, loops, and Python data structures. After learning Python fundamentals, you should be set to start practicing with mini scripting projects.

2. Become Advanced with Python: Here you will now seek to add utility to your Python knowledge by learning how Python interacts with Web Data (Web Scraping ability is one of the biggest outcomes here), how to use Python for Object-Oriented Programming, and finally how to integrate Python with Databases (SQL Databases, NoSQL Databases, and APIs)

3. Focus on a Career Pathway: Now, you are already advanced in the language and it is time to explore and focus on a career pathway. This will involve delving into Python libraries and frameworks that are specific to a particular career path. Here are some of the common pathways for Python Developers and some of their corresponding libraries/frameworks:

Web Development - Django and Flask Frameworks are the most popular for web development tasks and projects with Python

Data Science - Learn how to conduct Data Sourcing, Data Analysis and Machine Learning (ML) with Python. Libraries to learn include: Numpy, Matplotlib, Pandas, SciPy and SciKit Learn for ML among others.

Machine Learning and Artificial Intelligence - A popular career pathway as Artificial Intelligence keep gaining ground in our day-to-day lives. Some top libraries to learn are SciKit Learn, Tensorflow, Keras, Natural Language Toolkit (NLTK), PyTorch, Theano, etc.

Graphical User Interface (GUI) Programming - With GUI libraries such as Tkinter, wxPython, PyQT, and Kivy you can create graphical applications with Python.

Game Development - While not so many developers end up in Game Development, it is probably one of the most interesting pathways to explore. To build games, PyGame is the library to learn.

Any career pathway or recommended library that you think we left out? Drop a comment at the end of this article!
Additionally, it is recommended that you explore Version Control ( Github is a perfect choice), Python Data Structure Algorithms (efficiency matters always) and DevOps (practices combining software development with IT operations in companies).

In this section, I have detailed all resources that you need to learn Python. You could use these resources to teach yourself Python from scratch or supplement any Python Course:

Integrated Development Environment (IDEs)

1. Visual Studio Code - The most popular IDE not only for Python but for numerous programming languages. It goes without saying, VS Code is what I use from day-to-day

2. Jupyter Notebooks - If your target is taking up a Data Science pathway, then look no further than Jupyter. This has become an industry-standard tool for Data Scientists

3. Other top options worth considering are: PyCharm, Atom, and Spyder

Your first step before even learning the language should be choosing an IDE and setting it up. This is where you'll be writing and executing your Python code. Here are the top IDEs to consider:

You can download and install your chosen IDE independently, however, I recommend using Anaconda which comes packaged with VSCode, Jupyter, and Spyder, even Rstudio for Data Science targets.

Test Runner

1. Unit Test - Built into Python, this is extremely popular across the Python community

2. Nose - This framework is wrapped around unittest to add more functionality for tests

3. Pytest - A lot of Pythonistas are now using py.test over unittest given its simple syntax

As a beginner, you probably want to delve into learning the basics before getting into testing. Nevertheless, test running is quite important in making sure all elements of your program are working as designed. In Python, we use the following libraries/frameworks to conduct tests:

Debugger
Learn Python from well-structured websites covering at least all fundamentals:

1. Official Python Documentation by Python.org - The Ultimate Python Resource

2. The W3 Schools Python Guide - My Personal Favorite for Beginners

3. The HitchHiker's Python Guide - Best Practice Handbook

Learn by reading detailed Python Books or PDF Publications:

1. Python for Everybody by Charles R. Severance [Download Free PDF] [Access as HTML Site]

2. Think Python - How to Think Like a Computer Scientist by Allen B. Downey [Buy on Amazon]

3. Learn Python the Hard Way by Zed Shaw [Buy on Amazon]

4. Python Crash Course - A Hands-On Project-based Introduction to Programming by Eric Matthes [Buy on Amazon]

5. Python Cookbook by David Beazley and Brian K.Jones [Buy on Amazon]

6. Python Tricks - A Buffet of Awesome Python Features by Dan Bader [Buy on Amazon]

7. Effective Python - 90 Specific Ways to Write Better Python by Brett Slatkin [Buy on Amazon]

As you learn Python and start practicing, bugs will be quite common and identifying them fast is an issue for many. Not any more! Today, all you have to do is copy-paste your code on Python Tutor to visualize its execution and help you pinpoint the bug or issue. Some alternative debuggers are The Python Debugger/PDB (A Python Module) and Online GDB.

1. Guru99 - Top 40 Python Interview Questions & Answers

2. EduReka - Top 100 Python Interview Questions You Must Prepare In 2020

3. DataFlair - 150+ Python Interview Questions and Answers for Freshers

Already versed with Python and would like to test your knowledge? We recommend using common interview questions to gauge your knowledge. After all, these questions give you an overview of what the industry needs you to know:

It goes without saying - Do Not Learn Coding Without Practice! But, the big problem is actually finding projects suited for your level that would best test and let you put your skill into practice. We've therefore split these projects into beginner, intermediate, and advanced levels:

Most of these projects were inspired by Data Flair - Python Project Ideas for 2020. To understand the project deliverable, you can simply make a Google Search or visit the Data Flair link to get a short description.
Have you already done any of these projects? Or, do you have other project ideas worth mentioning? Drop a comment at the end of the article with your Github Repo link or Project Idea.
The starred projects require a Graphical User Interface to be fulfilled while the projects with "Rec." are those that I recommend trying out for ultimate practice and fun engagement. I have also sought to attempt all these projects and make them available on the Chaptr Github Account. 3 project repositories will be added each week for the next 10 weeks. Contributions are open!

Alas! You are no random beginner anymore, you are pretty confident with your skills, and you have probably started populating your Github portfolio with some inspiring Python projects. You have also started mastering additional libraries to shape your career pathway. It is time to continue your Python engagement and keep developing your competencies. Here are some ways to achieve this:

I am not usually a fan of certifications, but in most countries, employers are still blinded by these traditional standards of proving competence. However, on a positive note, credible certifications do test your competence well and best help you know whether you are set for a job in the industry. Below are the two organizations best suited for Python competence certification:

Entry - Certified Entry-Level Python Programmer Certification

Associate - Certified Associate in Python Programming Certification

Professional - Certified Professional in Python Programming 1 Certification and Certified Professional in Python Programming 2 Certification

The Python Institute (by the Open Education Development Group) offers 4 certification exams at 3 competency levels:

MTA - Microsoft Technology Associate

MCSA - Microsoft Certified Solutions Associate

MCSD - Microsoft Certified Solutions Developer

Microsoft Inc. (The company needs no introduction) offers mostly online exams for certification across all continents. You could explore the following certifications:

Beware that Microsoft is undertaking a major "certpocalypse" (Certificate Apocalypse), and some of these certification exams will no longer be on offer next year, but once certified, whether or not a program is retired, the certification will be valid and active for 2 years as usual.

1. Love Python - http://love-python.blogspot.com/

2. Planet Python - https://planetpython.org/

3. The Mouse Vs. The Python - https://www.blog.pythonlibrary.org/

4. Real Python - https://www.fullstackpython.com/blog.html

5. Full Stack Python - https://realpython.com/

One of the best ways to keep up your engagement with Python will be through Python Blogs and Vlogs. Below are blogs you should definitely look at. They are all pretty consistent on posting and have tons of Python content at everyone's disposal:

1. r/Python - the official Reddit for Python News, Content, and Resources

2. Python Weekly- Free weekly Python Newsletter to subscribe to

3. PySlackers - An open Slack Channel for Python Enthusiasts

Finally, it time for you to engage further with the global Python community and even start contributing. Some of the popular communities for Pythonistas are:
Do you have ideas of interesting Python resources that have been left out? Have you used and gained from any of the resources above? Drop a comment below and let others learn what worked for you or what other resources could be of help.
Now, a Python Developer you are! So, what career pathway do you want to take? Data Science, Machine Learning & AI, Game Development, Web Development, etc. Any libraries from the Python Packages that interest you? You can now easily chart your path based on your interests and career goals.

I will also be releasing detailed resources on the Data Science Career Pathway as well as other popular Python career pathways.
Previously published at https://chaptrglobal.com/python-resources/
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Top Python Resources for Beginners | Hacker Noon

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New to Python? Or are you already a seasoned developer looking to boost and advance your Python knowledge? We have compiled a bull-pack of recommended resources for anyone looking to learn Python Programming.