报错信息：
Traceback (most recent call last):
File “D:/flaskProject/test.py”, line 35, in test
pool.apply(self.out, args=(i,))
File “Python37-32\lib\multiprocessing\pool.py”, line 261, in apply
return self.apply_async(func, args, kwds).get()
File “\lib\multiprocessing\pool.py”, line 657, in get
raise se
