cloud development environment

Flask online coding platform

Build Python web apps and APIs with Flask in the cloud.

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about Flask

Flask in the cloud, ready in under a minute.

Flask is a lightweight Python web framework built on Werkzeug and Jinja2. Its minimal core and modular design make it a natural fit for APIs, web dashboards, and small to medium web applications. It gives developers control over structure rather than enforcing conventions. A RunCode workspace gives you Flask, Python, and core dependencies preinstalled, ready to run in under a minute.

Open a Flask workspace →
app.py

What Flask is good for

Flask keeps its core small and adds nothing you did not ask for. A modular extension system covers authentication, database access, form validation, and more. Common pairings include SQLAlchemy for database access, WTForms for form handling, and Flask-Login for user sessions. The built-in test client makes it straightforward to write automated tests for routes and views.

  • Minimalist core: small codebase, few mandatory dependencies
  • Modular design: add extensions for auth, databases, and forms as needed
  • Large ecosystem of community-maintained extensions
  • Built-in test client for route and view testing
  • Jinja2 templating included out of the box

What you get on RunCode for Flask

  • Flask and Python preinstalled
  • VS Code running in your browser
  • Terminal for flask run, pip install, and debugging
  • Your repo cloned from GitHub, GitLab, or Bitbucket on first boot
  • Workspace ready in under a minute
your cloud development solution

Built for the way developers actually work.

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