[issue22926] asyncio: raise an exception when called from the wrong thread

[STINNER Victor]

STINNER Victor added the comment:

Here is a patch without unit:

- modify get_event_loop() to always raise a RuntimeError if the thread has no event loop. Before an AssertionError was not raised if python runs with -O option
- modify BaseEventLoop._assert_is_current_event_loop() to fail if the thread has an event loop
- modify tests to set the event loop to the newly created event loop, instead of setting it to None

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keywords: +patch
Added file: http://bugs.python.org/file37303/asyncio_thread.patch

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