Manhole - In-process Python Debugging Shell

Manhole is an in-process Python service that accepts Unix domain socket connections to provide stack traces for all threads and an interactive Python prompt. It can operate as a daemon thread or a signal handler. It is inspired by Twisted's manhole and focuses on simplicity with no external dependencies. The current version is 1.8.1, and releases appear to be on a somewhat irregular, feature-driven cadence.