python中强制关闭线程、协程与进程的方法是什么

import threadingimport timeimport gcimport datetimedef circle():    print("begin")    try:        while True:            current_time = datetime.datetime.now()            print(str(current_time) + ' circle.................')            time.sleep(3)    except Exception as e:        print('error:',e)    finally:        print('end')if __name__ == "__main__":   t = threading.Thread(target=circle)   t.setDaemon(True)   t.start()   time.sleep(1)   # stop_thread(t)   # print('stoped threading Thread')    current_time = datetime.datetime.now()   print(str(current_time) + ' stoped after')    gc.collect()   while True:      time.sleep(1)      current_time = datetime.datetime.now()      print(str(current_time) + ' end circle')

def Daemon_thread():   circle_thread= threading.Thread(target=circle)#    circle_thread.daemon = True   circle_thread.setDaemon(True)   circle_thread.start()      while running:        print('running:',running)         time.sleep(1)   print('end..........') if __name__ == "__main__":    t = threading.Thread(target=Daemon_thread)    t.start()       time.sleep(3)    running = False    print('stop running:',running)     print('stoped 3')     gc.collect()    while True:        time.sleep(3)        print('stoped circle')

import ctypesimport inspectimport threadingimport timeimport gcimport datetimedef async_raise(tid, exctype):   """raises the exception, performs cleanup if needed"""   tid = ctypes.c_long(tid)   if not inspect.isclass(exctype):      exctype = type(exctype)   res = ctypes.pythonapi.PyThreadState_SetAsyncExc(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)   def circle():    print("begin")    try:        while True:            current_time = datetime.datetime.now()            print(str(current_time) + ' circle.................')            time.sleep(3)    except Exception as e:        print('error:',e)    finally:        print('end')if __name__ == "__main__":   t = threading.Thread(target=circle)   t.start()   time.sleep(1)   stop_thread(t)   print('stoped threading Thread')    current_time = datetime.datetime.now()   print(str(current_time) + ' stoped after')    gc.collect()   while True:      time.sleep(1)      current_time = datetime.datetime.now()      print(str(current_time) + ' end circle')

from signal import pthread_kill, SIGTSTPfrom threading import Threadfrom itertools import countfrom time import sleepdef target():    for num in count():        print(num)        sleep(1)thread = Thread(target=target)thread.start()sleep(5)signal.pthread_kill(thread.ident, SIGTSTP)

import timeimport gcimport datetimeimport multiprocessingdef circle():    print("begin")    try:        while True:            current_time = datetime.datetime.now()            print(str(current_time) + ' circle.................')            time.sleep(3)    except Exception as e:        print('error:',e)    finally:        print('end')if __name__ == "__main__":    t = multiprocessing.Process(target=circle, args=())    t.start()    # Terminate the process    current_time = datetime.datetime.now()    print(str(current_time) + ' stoped before')     time.sleep(1)    t.terminate()  # sends a SIGTERM    current_time = datetime.datetime.now()    print(str(current_time) + ' stoped after')     gc.collect()    while True:        time.sleep(3)        current_time = datetime.datetime.now()        print(str(current_time) + ' end circle')

import asyncioimport timeasync def num(n):    try:        i = 0        while True:            print(f'i={i} Hello')            i=i+1            # time.sleep(10)            await asyncio.sleep(n*0.1)        return n    except asyncio.CancelledError:        print(f"数字{n}被取消")        raiseasync def main():    # tasks = [num(i) for i in range(10)]    tasks = [num(10)]    complete, pending = await asyncio.wait(tasks, timeout=0.5)    for i in complete:        print("当前数字",i.result())    if pending:        print("取消未完成的任务")        for p in pending:            p.cancel()if __name__ == '__main__':    loop = asyncio.get_event_loop()    try:        loop.run_until_complete(main())    finally:        loop.close()