Multiprocessing cause error inside process?

Question

Python

Is it possible to somehow stop the Process by causing an error?
The fact is that at the end of the multiprocess.Process session, I would like the action shown in finally to be performed:

def drop(args):
    try:
         # do something
         driver=**anything**
         #do something 
    except:
          pass
    finally:
         driver.do_anything()

For now, I'm stopping the session like this:

s.terminate()
s.join() 
#Здесь должно выполнится driver.do_anything()

Is it possible to somehow cause an error inside the session, so that the finally or except condition would be fulfilled?

Thanks

Answer 1

You can write a custom process using a context manager.
The __enter__() method is executed at the start, and __exit__() is always at the exit of the context manager, you can catch your mistakes in it and take the necessary actions.

from multiprocessing import Process


class CustomProcess(Process):
    def __init__(self):
        super().__init__()

    def __enter__(self):
        return self

    def __exit__(self, exc_type, exc_val, exc_tb):
        print(exc_type, exc_val, exc_tb)
        print("Посмертное действие")


if __name__ == '__main__':
    with CustomProcess() as process:
        raise Exception("Some Value")

Answer 2

Create a custom exception and throw it in a try block:

class MyException(Exception):
    pass


def drop(args):
    try:
         # do something
         driver=**anything**
         #do something 
         raise MyException
    except MyException:
          pass
    finally:
         driver.do_anything()