HMR for Python

Example Use Cases

• 1

  Efficient hot module reloading in Python applications without full process restarts.

• 2

  Maintain application state during code updates, especially in ML or web services.

• 3

  A reactive programming framework with fine-grained dependency tracking.

Description

HMR provides a pythonic and efficient hot module reload framework that updates only the affected parts of a Python application at runtime without restarting the entire process, preserving app state. It supports variable-level granularity through runtime dependency tracking, making development smoother and faster, especially for long initialization tasks. The ecosystem includes integrations for FastAPI, Uvicorn, MCP servers, and browser auto-refresh middleware, enhancing Python development workflows.