[issue21326] asyncio: request clearer error message when event loop closed

[Guido van Rossum]

Guido van Rossum added the comment:

Hm, I've never hear from someone who did this before. It might be easy to fix, but it would be ugly too (every EventLoop method would have to check this), and not very useful (you'll only make this mistake once in your life).

How much time did you waste debugging this?

Maybe we can just change repr(loop) to make it clear that it's closed?

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priority: normal -> low

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