python - 线程内未捕获异常是只杀死线程还是整个进程？

Question

当一个线程内部引发异常而没有在其他任何地方捕获它时，它会杀死整个应用程序/解释器/进程吗？还是只会杀死线程？

Answer 1

让我们试试看:

import threading
import time

class ThreadWorker(threading.Thread):

    def run(self):
        print "Statement from a thread!"
        raise Dead


class Main:

    def __init__(self):
        print "initializing the thread"
        t = ThreadWorker()
        t.start()
        time.sleep(2)
        print "Did it work?"


class Dead(Exception): pass



Main()

上面的代码产生以下结果:

> initializing the thread 
> Statement from a thread! 
> Exception in thread
> Thread-1: Traceback (most recent call last):   File
> "C:\Python27\lib\threading.py", line 551, in __bootstrap_inner
>     self.run()   File ".\pythreading.py", line 8, in run
>     raise Dead Dead
> ----- here the interpreter sleeps for 2 seconds -----
> Did it work?

因此，您的问题的答案是引发的异常只会使它所在的线程崩溃，而不是整个程序。