协程对象
协程对象是使用 关键字声明的函数返回的。
PyCoroObject
与协程对象对应的类型对象。
Return true if ob’s type is PyCoro_Type; ob must not be NULL.
(PyFrameObject **frame, name*, PyObject qualname*)
Create and return a new coroutine object based on the frame object, with __name__
and set to name and qualname. A reference to frame is stolen by this function. The frame argument must not be NULL.