[issue23548] TypeError in event loop finalizer, new in Python 3.4.3

[Guido van Rossum]

Guido van Rossum added the comment:

Does it also have that error if you add `asyncio.get_event_loop().close()` to the end of the program?

Can you figure out what the value of `sig` and `handler` are in the traceback?

My gut feeling tells me this is due to `signal.default_int_handler` being None at that point in the program tear-down sequence. (Which is why I recommend closing the loop.)  The tear-down sequence at best has a partial order, which is why this may come and go depending on random variables like which Python version you use.

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