Python应用开发频繁假死的问题分析及解决

 import threading
 import time
 from sample_singleton import singleton
 ​
 @singleton
 class TestThreadingEvent:
     def __init__(self):
         self._stop_event = threading.Event()
         self._pause_event = threading.Event()
         self._thread = None
 ​
     def set_stop(self):
         self._stop_event.set()
 ​
     def set_pause(self):
         self._pause_event.set()
 ​
     def start(self):
         print("任务开始")
         self._stop_event.clear()
         self._pause_event.set()
         print("开始执行")
         self._thread = threading.Thread(target=self._run)
         self._thread.start()
 ​
     def _run(self):
         count = 0
         while True:
             if self._stop_event.is_set():
                 print("任务被成功停止")
                 return
             print(f"是否需要暂停：{not self._pause_event.is_set()}")
             self._pause_event.wait()
             # 执行任务
             print(f"do something: {count}")
             time.sleep(1)
             count += 1
 ​
     def pause(self):
         print("点击了暂停")
         self._pause_event.clear()
         time.sleep(2)
 ​
     def stop(self):
         print("点击了停止")
         self._stop_event.set()
         print("成功停止")
         if self._thread is not None:
             self._thread.join()  # 确保线程终止
 ​
 ​
 print("我点击了开始")
 singletonA = TestThreadingEvent()
 singletonA.start()
 singletonA.pause()
 print("我点击了停止")
 singletonA.stop()
 print("我再次点击了开始")
 singletonA.start()

 我点击了开始
 任务开始
 开始执行
 是否需要暂停：False
 do something: 0
 我点击了暂停
 是否需要暂停：True
 我点击了停止
 成功停止
 # 然后在这里卡死