debugpy

The standard DAP-compliant debugger engine powering Python execution in Visual Studio Code and remote environments.

Debugpy is the successor to ptvsd and serves as the official implementation of the Debug Adapter Protocol (DAP) for Python 3. It enables high-performance debugging features like multiprocessing support, remote attachment via TCP, and just-my-code filtering. By utilizing the pydevd backend, it handles complex threading scenarios and allows developers to inject debugging logic into running processes without restarting the interpreter. It is the core engine behind the Python extension in VS Code, ensuring parity between local development and containerized production environments.

https://github.com/microsoft/debugpy