CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=main 2020-07-25T05:55:37+00:00 2020-07-25T05:55:37+00:00 Jonathan Hogg me@jonathanhogg.com 2020-07-21T17:47:28+00:00 urn:sha1:901f3dce6e5e7c1501550ca0b7f3283848194a2e 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. 2016-04-13T14:27:06+00:00 Damien George damien.p.george@gmail.com 2016-04-13T14:27:06+00:00 urn:sha1:c33df193bfbc09dc5c3b62db6507ad1a79e92ea6