[issue29988] with statements are not ensuring that __exit__ is called if __enter__ succeeds
Nick Coghlan
report at bugs.python.org
Fri Sep 8 14:59:29 EDT 2017
Nick Coghlan added the comment:
I updated the PR at https://github.com/ncoghlan/cpython/pull/2/files with another attempt at reinstating the asynchronous CM test case that also tweaks the eval loop to ensure that the first few opcodes in a function are always executed before pending calls are checked.
This version highlights why I think asyncio really needs work before the async behaviour can be tested robustly in the standard library: it *hangs* somewhere in _asyncio.TaskStepMethWrapper once pending call handling is deferred long enough for the __aexit__ method to actually finish.
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