python 主线程捕获子线程异常的方法

from threading import Thread
import traceback

class PropagatingThread(Thread):
    def run(self):
        self.exc = None
        try:
            if hasattr(self, '_Thread__target'):
                # Thread uses name mangling prior to Python 3.
                self.ret = self._Thread__target(*self._Thread__args, **self._Thread__kwargs)
            else:
                self.ret = self._target(*self._args, **self._kwargs)
        except BaseException as e:
            self.exc = e
        finally:
            if hasattr(self, '_Thread__target'):
                del self._Thread__target, self._Thread__args, self._Thread__kwargs
            else:
                del self._target, self._args, self._kwargs


    def join(self):
        super(PropagatingThread, self).join()
        if self.exc:
            raise self.exc
        return self.ret

def f(*args, **kwargs):
    print(args)
    print(kwargs)
    raise Exception('I suck')


if __name__ == "__main__":
    thread_list = []
    try:
        thread_list.append(PropagatingThread(target=f, args=(5,), kwargs={'hello': 'world'}))
        thread_list.append(PropagatingThread(target=f, args=(5,), kwargs={'hello': 'worlds'}))
        for thread in thread_list:
            thread.daemon = True
            thread.start()
        for thread in thread_list:
            thread.join()
    except BaseException as err:
        exe_info = traceback.format_exc()
        print(str(exe_info))

结果为：
(5,)
{'hello': 'world'}
(5,)
{'hello': 'worlds'}
Traceback (most recent call last):
  File "E:/project/medusa/utils/test.py", line 43, in <module>
    thread.join()
  File "E:/project/medusa/utils/test.py", line 25, in join
    raise self.exc
  File "E:/project/medusa/utils/test.py", line 12, in run
    self.ret = self._target(*self._args, **self._kwargs)
  File "E:/project/medusa/utils/test.py", line 31, in f
    raise Exception('I suck')
Exception: I suck


Process finished with exit code 0

其他方法见地址：

https://stackoverflow.com/questions/2829329/catch-a-threads-exception-in-the-caller-thread-in-python