Python

Runs a Python project on an on-device Python server; the WebView points at the local port.

When to use

Flask, Django, FastAPI, Tornado apps, or the built-in HTTP server.

Runtime

• Version — Python 3.14.
• Frameworks — Flask, Django, FastAPI (uvicorn), Tornado, built-in HTTP server.
• Dependencies — pip resolves into .pypackages; custom native extensions supported.
• Versioning — binary names are versioned so future bumps don't hard-code paths.
• Managed in the Linux Environment and Runtime Management screens.

Core config

Backed by PythonAppConfig.

Project

• Project (projectId/projectName, sourceProjectPath) — the Python source.
• Framework (framework) — detected framework, if any.
• Python version (pythonVersion).

Entry & server

• Entry file (entryFile) — defaults to app.py.
• Entry module (entryModule) — for module-style entry (e.g. main:app).
• Server type (serverType) — derived automatically from the detected framework (FastAPI→uvicorn, Django→gunicorn, everything else→builtin); configured on import, no manual selection.
• Port (serverPort) — allocated through the Port Manager.
• Environment variables (envVars) — key/value pairs passed to the process.

Dependencies & extensions

• Requirements file (requirementsFile) — defaults to requirements.txt. A file that is empty, or only comments and pip options, does not start an install.
• Has pip dependencies (hasPipDeps) — whether deps resolve into .pypackages.
• Custom native extensions (customPythonExtensions) — add .so extensions, each with load order.