python如何关闭线程

python关闭线程的方法：首先导入threading，定义一个方法；然后定义线程，target指向要执行的方法，启动它；最后停止线程，代码为【stop_thread(myThread)】。

本教程操作环境：windows7系统、python3.9版，DELL G3电脑。

python关闭线程的方法：

一、启动线程

首先导入threading

import threading

然后定义一个方法

def serial_read():

...

...

然后定义线程，target指向要执行的方法

myThread = threading.Thread(target=serial_read)

启动它

myThread.start()

二、停止线程

直接上代码

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)

停止线程

stop_thread(myThread)