[issue42760] inspect.iscoroutine returns False for asynchronous generator functions

[Paolo Lammens]

New submission from Paolo Lammens <lammenspaolo at gmail.com>:

The `inspect.iscoroutinefunction` and `inspect.iscoroutine` functions return `False` for the `asend`, `athrow` and `aclose` methods of asynchronous generators (PEP 525). These are coroutine functions (i.e. one does e.g. `await gen.asend(value)`) so I would have expected these to return `True`.

Example:

```python
async def generator():
    return
    yield
```

```python
>>> import inspect
>>> g = generator()
>>> inspect.iscoroutinefunction(g.asend)
False

>>> inspect.iscoroutine(g.asend(None))
False
```

----------
components: Library (Lib), asyncio
messages: 383862
nosy: asvetlov, plammens, yselivanov
priority: normal
severity: normal
status: open
title: inspect.iscoroutine returns False for asynchronous generator functions
type: behavior

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue42760>
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