In Python, I've often seen data passed to a DWORD parameter of a function, like this "SND_FILENAME | SND_ASYNC". What does the "|" operator do here?

[Casey]

Hi, I would like to submit an urgent question to you! in python, i've often seen data passed to a dword parameter of a function, like this "snd_filename | snd_async". what does the "|" operator do here? It is urgent, Thank you very much for kindly giving me your opinion quickly.