Python Debugpy

Use when Python code needs interactive debugging: hidden locals, confusing state mutation, failing tests, subprocesses, long-running services, or remote/headless attach.

Pick the smallest debugger that reaches the bad frame.

Choose

• breakpoint(): local code, source edits ok, fastest path.
• python3 -m pdb: no source edit, launch from the beginning.
• python3 -m pdb -c continue: stop at an unhandled exception.
• debugpy: remote/headless process, DAP client, already-running PID, or service startup race.

Commands