Wykres commitów

3 Commity (master)

Autor SHA1 Wiadomość Data
Damien George 606ec9bfb1 py/compile: Fix async for's stack handling of iterator expression.
Prior to this fix, async for assumed the iterator expression was a simple
identifier, and used that identifier as a local to store the intermediate
iterator object.  This is incorrect behaviour.

This commit fixes the issue by keeping the iterator object on the stack as
an anonymous local variable.

Fixes issue #11511.

Signed-off-by: Damien George <damien@micropython.org>
2023-07-13 13:50:50 +10:00
Jonathan Hogg 37e1b5c891 py/compile: Don't await __aiter__ special method in async-for.
MicroPython's original implementation of __aiter__ was correct for an
earlier (provisional) version of PEP492 (CPython 3.5), where __aiter__ was
an async-def function.  But that changed in the final version of PEP492 (in
CPython 3.5.2) where the function was changed to a normal one.  See
https://www.python.org/dev/peps/pep-0492/#why-aiter-does-not-return-an-awaitable
See also the note at the end of this subsection in the docs:
https://docs.python.org/3.5/reference/datamodel.html#asynchronous-iterators
And for completeness the BPO: https://bugs.python.org/issue27243

To be consistent with the Python spec as it stands today (and now that
PEP492 is final) this commit changes MicroPython's behaviour to match
CPython:  __aiter__ should return an async-iterable object, but is not
itself awaitable.

The relevant tests are updated to match.

See #6267.
2020-07-25 00:58:18 +10:00
Damien George c33df193bf tests: Add 6 tests for async await/for/with. 2016-04-13 15:27:06 +01:00