import inspect
import ctypes

def _async_raise(tid, exctype):
    if not inspect.isclass(exctype):
        exctype = type(exctype)

    res = ctypes.pythonapi.PyThreadState_SetAsyncExc(tid, ctypes.py_object(exctype))
    if res == 0:
        raise ValueError("Invalid tid")
    elif res != 1:
        ctypes.pythonapi.PyThreadState_SetAsyncExc(tid, None)
        raise RuntimeError("PyThreadState_SetAsyncExc failed")

def stop_thread(thread):
    self._async_raise(thread.ident, SystemExit)