Show HN: Seapie – a Python debugger where breakpoints drop into a REPL https://ift.tt/NIlCU4v

Show HN: Seapie – a Python debugger where breakpoints drop into a REPL Author here. I started seapie as a reaction to pdb's command-driven interface in 2019. I wanted a breakpoint to simply mean 'open a Python REPL here', with debugging functionality layered on top instead of replacing the REPL. `seapie.breakpoint()` opens a working `>>>` REPL at the current execution state. Any changes to variables or function definitions persist. Debugger state is exposed via built-ins (e.g. `_magic_`), and stepping/frame control/etc is handled via small `!commands`. I've been using this regularly in my own work for a few years now. Happy to answer questions or hear criticism, especially from people who've used debuggers heavily. https://ift.tt/scFbOK8 January 12, 2026 at 03:16AM