python关闭线程_python怎么关闭线程

python关闭线程的方法：

1、利用setDaemon(True)这个函数的特性关闭线程

特性如下：主线程A中，创建了子线程B，并且在主线程A中调用了B.setDaemon(),这个的意思是，把主线程A设置为守护线程，这时候，要是主线程A执行结束了，就不管子线程B是否完成,一并和主线程A退出。

2、使用ctypes强行杀掉线程import threading

import time

import inspect

import ctypes

def _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 print_time():

while 2:

print(111111111111)

print(222222222222)

print(333333333333)

print(444444444444)

print(555555555555)

print(666666666666)

if __name__ == "__main__":

t = threading.Thread(target=print_time)

t.start()

stop_thread(t)

print("stoped")

while 1:

pass

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