Show HN: Textual-debugger, a Python TUI debugger with power features

3 points

23 days ago

I'm a vim/command line guy and loved using pudb (https://pypi.org/project/pudb/) as I was learning Python. Gradually my code became more complex and pudb wasn't keeping up; event loops and the threading and multiprocessing modules were problematic.

TL;DR: I used Claude Code to write the TUI debugger of my dreams: https://pypi.org/project/textual-debugger/ It's built with textual and debugpy so can do all the things possible you'd would expect with the Debug Adapter Protocol (remote attach, thread/process inspection).

And then some!

I added a JSON-RPC interface so the debugger can be controlled by external tools (eg an AI agent). I also added the capability to run the debug target in a separate terminal which is handy for debugging applications that make demands on the terminal (like curses / rich / textual apps).

Here's a video of that in action: https://youtu.be/121aihjAQ8g

Screenshots: - https://github.com/AlDanial/tdb/blob/main/gallery/async_brea... - https://github.com/AlDanial/tdb/blob/main/gallery/async_task... - https://github.com/AlDanial/tdb/blob/main/gallery/multiproce... - https://github.com/AlDanial/tdb/blob/main/gallery/threading_...

Give it a try! pip install textual-debugger

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