Function _has_coroutine_mark

Lib/inspect.py:308–312

(f)

_is_coroutine_mark = object()

def _has_coroutine_mark(f):
    while ismethod(f):
        f = f.__func__
    f = functools._unwrap_partial(f)
    return getattr(f, "_is_coroutine_marker", None) is _is_coroutine_mark

def markcoroutinefunction(func):
    """