Sometimes there is such a need, in some cases, need to kill a thread previously created in the main thread, you can use the following method.
import threading import time import inspect import ctypes def _async_raise(tid, exctype): """Raises an exception in the threads with id tid""" if not inspect.isclass(exctype): raise TypeError("Only types can be raised (not instances)") res = ctypes.pythonapi.PyThreadState_SetAsyncExc(ctypes.c_long(tid), ctypes.py_object(exctype)) if res == 0: raise ValueError("invalid thread id") elif res != 1: # """if it returns a number greater than one, you're in trouble, # and you should call it again with exc=NULL to revert the effect""" ctypes.pythonapi.PyThreadState_SetAsyncExc(tid, None) raise SystemError("PyThreadState_SetAsyncExc failed") def stop_thread(thread): _async_raise(thread.ident, SystemExit) class TestThread(threading.Thread): def run(self): print("begin run the child thread") while True: print("sleep 1s") time.sleep(1) if __name__ == "__main__": print("begin run main thread") t = TestThread() t.start() time.sleep(3) stop_thread(t) print("main thread end")
By calling the python built-in API, an exception is thrown in a thread, the thread exits.