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SPECIFICTION
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CodeSkulptor3

py3.codeskulptor.org

Free plan Web
Visit py3.codeskulptor.org
Spec score 8.1 #7 of 26 in Python IDEs

What it is

CodeSkulptor3 is a browser-based Python interpreter created for teaching Python, especially to beginners. The interface includes an editor and a console that displays printed output and error messages. It implements a subset of Python 3 and adds the SimpleGui, SimpleMap, and SimplePlot graphical libraries. The tool is featured in Coursera’s “Fundamentals of Computing” course, and the maker credits Scott Rixner with building it. Users can save programs to cloud storage under a URL or download saved programs to a computer. Anyone with a saved program’s URL can access its associated file. Collaborative editing sessions can be created or joined, but they are temporary and deleted in about a day. Modern Google Chrome, Mozilla Firefox, and Apple Safari are listed as supported browsers. The documented Python subset excludes constructs including try-except and with statements. Programs can load external files only over HTTPS. The maker says users are anonymous and personal information is not collected. Saved files are stored indefinitely and used to provide the service and anonymous educational research.

Spec sheet

Purpose
CodeSkulptor3 is a browser based Python interpreter created for teaching Python, especially to beginners.Read 7 Oct 2026 · py3.codeskulptor.org
Free plan
YesRead 20 Sep 2026 · py3.codeskulptor.org
Privacy
The maker says CodeSkulptor3 does not collect personal information and users are anonymous.Read 7 Oct 2026 · py3.codeskulptor.org
Founded
2012Read 28 Sep 2026 · py3.codeskulptor.org
Analytics
The site uses Plausible Analytics for aggregated usage trends, which the maker says collects no personal data and uses no cookies.Read 7 Oct 2026 · py3.codeskulptor.org
Browser support
The documentation lists modern Google Chrome, Mozilla Firefox, and Apple Safari as supported browsers.Read 7 Oct 2026 · py3.codeskulptor.org
Collaboration
Users can create or join collaborative editing sessions, which are temporary and are deleted in about a day.Read 7 Oct 2026 · py3.codeskulptor.org
Course use
It is featured in the Coursera course “Fundamentals of Computing.”Read 7 Oct 2026 · py3.codeskulptor.org
Editor and console
The browser interface includes a Python editor and a console that displays printed output and error messages.Read 7 Oct 2026 · py3.codeskulptor.org
HTTPS requirement
Programs can load external files only over HTTPS; resources hosted by CodeSkulptor support HTTPS.Read 7 Oct 2026 · py3.codeskulptor.org
Integrations and services
The maker lists Google Cloud Storage, Firebase Realtime Database, and Google Maps Platform among the services CodeSkulptor3 uses.Read 7 Oct 2026 · py3.codeskulptor.org
Maker credit
The maker credits Scott Rixner with building CodeSkulptor3.Read 7 Oct 2026 · py3.codeskulptor.org
Python limitations
The documented subset does not support constructs including `try-except` statements and `with` statements.Read 7 Oct 2026 · py3.codeskulptor.org
Python support
It implements a subset of Python 3 and adds the SimpleGui, SimpleMap, and SimplePlot graphical libraries.Read 7 Oct 2026 · py3.codeskulptor.org
Save and download
Users can save programs to cloud storage under a URL and download a saved program to their computer.Read 7 Oct 2026 · py3.codeskulptor.org
Saved file use
Saved files are stored indefinitely, and the maker says they are used to provide the service and for anonymous educational research.Read 7 Oct 2026 · py3.codeskulptor.org
URL access
Anyone with a saved CodeSkulptor3 URL can access the file associated with that URL.Read 7 Oct 2026 · py3.codeskulptor.org

Plans and prices

Free Free Freely available for all to use Read 7 Oct 2026 · py3.codeskulptor.org

Every CodeSkulptor3 plan and price →

Strong points and limits

Strong points

  • Free browser-based Python environment
  • Editor and console included
  • Cloud saving under shareable URLs
  • Temporary collaborative editing sessions
  • SimpleGui, SimpleMap, and SimplePlot libraries

Limits

  • Implements only a subset of Python 3
  • try-except and with statements are unsupported
  • Anyone with a saved URL can access its file
  • Collaboration sessions are deleted in about a day

Who it suits

CodeSkulptor3 suits beginners and educators teaching introductory Python in a browser. It is also useful for Coursera learners and users who need simple graphical libraries without local installation.

Verdict

CodeSkulptor3 is a focused teaching environment with browser editing, simple graphics, cloud saves, and temporary collaboration. Its restricted Python subset and URL-accessible files are important boundaries for learners and instructors.

Where Specifiction places it

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