PythonShell is a local Python workspace that operates entirely within the Chrome browser. It provides a private console environment for writing, testing, and running Python code without requiring a separate desktop application or cloud notebook. The tool is built around the Pyodide runtime, which bundles Python 3.7.4 and allows standard library imports, with the exception of modules limited by browser or runtime constraints. Users can type code directly into the console, paste multi-line blocks, recall command history using arrow keys, and execute scripts in either a popup window or a full browser tab. The extension stores all Python code and console history locally on the user's device. No account is required for the free version, and no telemetry is collected for the core console functionality. The interface includes a help panel with shortcuts and usage notes. The extension is 22.01 MiB in size, supports English, and was last updated on July 21, 2026. It is developed by Game Scorpion Inc., based in Mississauga, Ontario, Canada. PythonShell is designed for a range of users, including beginners learning Python syntax, students and teachers in educational settings, developers building automation or AI prototypes, and Chromebook users who need a lightweight coding environment. The workflow involves opening the extension, typing or pasting Python code, and viewing output immediately in the same window. The tool is intended for quick experiments, syntax practice, and local script testing. An optional paid upgrade, PythonShell Pro, unlocks additional workspace customization features such as dark mode, focus mode, session transcript export, local session snapshots, font size and style controls, custom backgrounds, coding companions with GIF support, companion position controls, and ambient workspace effects. Payment and subscription status for Pro are processed through ExtensionPay and Stripe, and the extension checks paid status only to enable those features; user code and history are not transmitted during these checks.