asyncio Event Loop Policies: A Deprecated Pattern
Think of an event loop policy as the global factory for asyncio's event loops, controlling which loop is created and how it's retrieved. It was used to swap implementations, but the entire API is deprecated in Python 3.14 and will be removed in 3.16.
An asyncio event loop policy acts as a global factory for event loops, dictating how `get_event_loop()` behaves and which loop class is instantiated. Historically, you'd set a policy to integrate third-party loops like `uvloop` or to inject custom logic. The entire mechanism is deprecated in Python 3.14 and slated for removal in 3.16; modern code should use `asyncio.Runner(loop_factory=...)` for explicit control.
Read the original → docs.python.org
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