Python 3.12 introduced sys.monitoring, a new framework for “monitoring” tools like debuggers and profilers to hook into. It provides fine-grained control so tools can listen only to certain events on specific lines of code. The framework came from PEP 669, thanks to Mark Shannon of the Faster CPython team.

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Adam Johnson

Python 3.12 introduces a new framework, sys.monitoring, that allows tools like debuggers and profilers to hook into specific events in the code with fine-grained control. This post demonstrates how to use sys.monitoring to track changes in the sys.path list and debug unexpected mutations effectively.

Python: spy for changes with sys.monitoring

<p>It’s incrible! I really like that!!</p>
