Wrapper around `asyncio.iscoroutinefunction` that handles `functools.partial` on Python<=3.7 and also async `__call__` methods

is_coroutine_function.py

import asyncio
import sys
from functools import partial

if sys.version_info >= (3, 8):
    _MANUAL_UNWRAP = False
else:
    _MANUAL_UNWRAP = True

def is_coroutine_function(obj: object) -> bool:
    """Thin wrapper around :func:`asyncio.iscoroutinefunction` that handles the support for
    :func:`functools.partial` which :func:`asyncio.iscoroutinefunction` only natively supports in
    Python 3.8+. Also handles callable classes, where ``__call__`` is async.

    Note:
        Can be removed once support for Python 3.7 is dropped.

    Args:
        obj (:class:`object`): The object to test.

    Returns:
        :obj:`bool`: Whether or not the object is a
            `coroutine function <https://docs.python.org/3/library/asyncio-task.html#coroutine>`

    """
    if not callable(obj):
        return False

    if _MANUAL_UNWRAP:
        while isinstance(obj, partial):
            obj = obj.func  # type: ignore[attr-defined]

    if not callable(obj):
        return False

    return asyncio.iscoroutinefunction(obj) or (
        hasattr(obj, "__call__") and asyncio.iscoroutinefunction(obj.__call__)
    )