New in version 3.5.
Coroutine objects are what functions declared with an async keyword
return.
PyCoroObject
The C structure used for coroutine objects.
PyTypeObject PyCoro_Type
The type object corresponding to coroutine objects.
int PyCoro_CheckExact(PyObject *ob)
Return true if ob's type is PyCoro_Type; ob must not be NULL.
PyObject* PyCoro_New(PyFrameObject *frame, PyObject *name, PyObject *qualname)
Return value: New reference.Create and return a new coroutine object based on the frame object,
with __name__ and __qualname__ set to name and qualname.
A reference to frame is stolen by this function. The frame argument
must not be NULL.