解决pycharm运行多线程程序报错"Unhandled exception in thread started by sys.excepthook is missing"

运行报错实例代码：

import timeimport threaddef timer(no, interval):    cnt = 0    while cnt < 3:        print 'Thread:(%d) Time:%s\n' % (no, time.ctime())        time.sleep(interval)        cnt += 1    thread.exit_thread()def test():  # Use thread.start_new_thread() to create 2 new threads    thread.start_new_thread(timer, (1, 1))    thread.start_new_thread(timer, (2, 2))if __name__ == '__main__':    test()

使用pyCharm运行后报错：

Unhandled exception in thread started by 
sys.excepthook is missing
lost sys.stderr

问题原因：启动线程之后，须确保主线程等待所有子线程返回结果后再退出，如果主线程比子线程早结束，无论其子线程是否是后台线程，都将会中断，抛出这个异常 。

问题解决方法：

在test()后增加sleep，保证子线程结束后主线程才结束。

解决问题后代码：

import timeimport threaddef timer(no, interval):    cnt = 0    while cnt < 3:        print 'Thread:(%d) Time:%s\n' % (no, time.ctime())        time.sleep(interval)        cnt += 1    thread.exit_thread()def test():  # Use thread.start_new_thread() to create 2 new threads    thread.start_new_thread(timer, (1, 1))    thread.start_new_thread(timer, (2, 2))if __name__ == '__main__':    test()    time.sleep(30)

运行结果：