2022年 11月 7日

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)】。

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

  1. def serial_read():
  2. ...
  3. ...

 

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

不多说了直接上代码

  1. import inspect
  2. import ctypes
  3. def _async_raise(tid, exctype):
  4. """raises the exception, performs cleanup if needed"""
  5. tid = ctypes.c_long(tid)
  6. if not inspect.isclass(exctype):
  7. exctype = type(exctype)
  8. res = ctypes.pythonapi.PyThreadState_SetAsyncExc(tid, ctypes.py_object(exctype))
  9. if res == 0:
  10. raise ValueError("invalid thread id")
  11. elif res != 1:
  12. # """if it returns a number greater than one, you're in trouble,
  13. # and you should call it again with exc=NULL to revert the effect"""
  14. ctypes.pythonapi.PyThreadState_SetAsyncExc(tid, None)
  15. raise SystemError("PyThreadState_SetAsyncExc failed")
  16. def stop_thread(thread):
  17. _async_raise(thread.ident, SystemExit)

 

停止线程

stop_thread(myThread)