Aiocontextvars

https://pypi.org/project/aiocontextvars/

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Aiocontextvars provides experimental asyncio support for the PEP-567 contextvars backport library in...

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### Using copy_context() with call_soon()

Source: https://pypi.org/project/aiocontextvars/0.2.2

In Python 3.7+, call_soon() and its family methods accept a 'context' keyword argument. For older versions or when using aiocontextvars, you need to explicitly use copy_context().run() to achieve the same context inheritance.

```python
loop.call_soon(copy_context().run, my_meth)
```

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