Python subprocess: pass non-string to argument

Question

I am using Raspberry Pi to record audio. I tried pyaudio but it didn't work, then I tried to use the subprocess module. As the recording needs to be executed multiple times, I need to make sure that the recoding filename is different after every recording.

For example, I would like to:

filename = datetime.now().strftime("%Y-%m-%d_%H_%M_%S")+".wav"

My question is: can I pass this filename as an argument to subprocess? I checked the document, it says only string and list are supported as arguments in subprocess.

Well, isn't a filename a string?

Tom Karzes
– Tom Karzes

2017-11-06 10:16:32 +00:00
Commented Nov 6, 2017 at 10:16 — Tom Karzes
– Tom Karzes, Commented Nov 6, 2017 at 10:16

glglgl · Accepted Answer · 2017-11-06 10:16:07Z

1

This filename is a string. So nothing prevents it from being used as one of the strings in subprocess.

Take care to use the list of strings variant with shell=False (the default) and the string variant with shell=True. Then everything should work as needed.

answered Nov 6, 2017 at 10:16

glglgl

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