Nathaniel Smith <n...@pobox.com> added the comment:
> I wouldn't be OK with magic switching in the behaviour of ContextDecorator
> (that's not only semantically confusing, it's also going to make the
> contextlib function wrappers even slower than they already are).
I hear you on the semantic confusion, but is a single check at definition time
really that expensive? The runtime cost is zero.
> I'm also entirely unclear on what you would expect a synchronous context
> manager to do when applied to an asynchronous function, as embedding an
> "await" call inside a synchronous with statement is unlikely to end well.
It would be like:
async def blah():
with something():
await foo()
There's nothing weird about this; people write the long version all the time.
You'd only do it when 'something()' doesn't do I/O, but there are lots of
context managers that don't do I/O.
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue37398>
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