[Dhairya-007]

AsyncSpooledTemporaryFile.fileno and .rollover were declared as plain methods returning Generator[Incomplete], so awaiting them — the only way to call them — was a type error:

await f.fileno()
# error: Incompatible types in "await" (actual type "Generator[Any, None, None]",
#        expected type "Awaitable[Any]")  [misc]

Both are generated by @delegate_to_executor("fileno", "rollover"), and _make_delegate_method builds an async def method(self, *args, **kwargs) that awaits run_in_executor. Verified against aiofiles 25.1.0:

>>> inspect.iscoroutinefunction(AsyncSpooledTemporaryFile.fileno)
True
>>> await f.fileno()
6
>>> await f.rollover()
None

So they are now async def returning what the delegated SpooledTemporaryFile methods return, which also matches how every other delegated method in this class is already written (close, flush, isatty, tell, ...).

Both names are already in @tests/stubtest_allowlist.txt, under the comment that covers exactly this case — "These all delegate using *args,**kwargs, but stubs use signature of method they are being delegated to" — so stubtest is unaffected.

The Generator import is now unused and dropped. Checked with mypy --strict.

[github-actions]

According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉