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makeasyncio.iscoroutinefunction a deprecated alias ofinspect.iscoroutinefunction and removeasyncio.coroutines._is_coroutine #94912

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@graingert

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@graingert

currently asyncio.iscoroutinefunction and inspect.iscoroutinefunction behave differently inconfusing and hard to document ways. It's possible to bring them into alignment but I think it would be better to makeasyncio.iscoroutinefunction a deprecated alias ofinspect.iscoroutinefunction and removeasyncio.coroutines._is_coroutine.

This is now possible with the recentremoval of@asyncio.coroutine and support forAsyncMock and other duck-type functions in inspect.iscoroutinefunction

the only caveats are - what should happen to users of theasyncio.coroutines._is_coroutine mark? eg:

@types.coroutine
def_wrap_awaitable(awaitable):
"""Helper for asyncio.ensure_future().
Wraps awaitable (an object with __await__) into a coroutine
that will later be wrapped in a Task by ensure_future().
"""
return (yieldfromawaitable.__await__())
_wrap_awaitable._is_coroutine=_is_coroutine

and all of these:

Lib/test/test_asyncio/test_base_events.py:    m_socket.getaddrinfo._is_coroutine = FalseLib/test/test_asyncio/test_base_events.py:        self.loop._add_reader._is_coroutine = FalseLib/test/test_asyncio/test_base_events.py:        self.loop._add_writer._is_coroutine = FalseLib/test/test_asyncio/test_base_events.py:        self.loop._add_reader._is_coroutine = FalseLib/test/test_asyncio/test_base_events.py:        self.loop._add_writer._is_coroutine = FalseLib/test/test_asyncio/test_base_events.py:        self.loop._add_reader._is_coroutine = FalseLib/test/test_asyncio/test_base_events.py:        self.loop._add_writer._is_coroutine = FalseLib/test/test_asyncio/test_base_events.py:        m_socket.getaddrinfo._is_coroutine = FalseLib/test/test_asyncio/test_base_events.py:        m_socket.getaddrinfo._is_coroutine = FalseLib/test/test_asyncio/test_base_events.py:        self.loop._add_reader._is_coroutine = FalseLib/test/test_asyncio/test_selector_events.py:        self.loop.add_reader._is_coroutine = FalseLib/test/test_asyncio/test_subprocess.py:        protocol.connection_made._is_coroutine = FalseLib/test/test_asyncio/test_subprocess.py:        protocol.process_exited._is_coroutine = FalseLib/unittest/mock.py:    mock._is_coroutine = asyncio.coroutines._is_coroutineLib/unittest/mock.py:        # iscoroutinefunction() checks _is_coroutine property to say if anLib/unittest/mock.py:        self.__dict__['_is_coroutine'] = asyncio.coroutines._is_coroutine

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