python如何關閉線程

python關閉線程的方法：首先導入threading，定義一個方法；然後定義線程，target指向要執行的方法，啟動它；最後停止線程，代碼為【stop_thread(myThread)】。

python關閉線程的方法：

一、啟動線程

首先導入threading

import threading      

然後定義一個方法

def serial_read():

...

...      

然後定義線程，target指向要執行的方法

myThread = threading.Thread(target=serial_read)      

啟動它

myThread.start()      

二、停止線程

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)      

stop_thread(myThread)