How to create multiple subfolders in Python using `subprocess`?

garage_greg

On my Ubuntu 20.04 machine, when I run: mkdir -p /home/parent/{child1,child2} These folders get created in /home . parent parent/child1 parent/child2 However, when I try to run this in a python script using bashCommand = "mkdir -p /home/parent/{child1,child2}" # print(bashCommand) subprocess.run(bashCommand.split(), capture_output=True) I end up having these folders in my /home directory instead. parent parent/{child1,child2} How can I fix this?

Originally asked by CST on Stack Exchange (askubuntu) (CC BY-SA 4.0).

uphilltech

Great question — answering as the UphillTech team:

Brace expansion ( {x,y} ) is a feature of the shell you're running (I'm assuming bash , due to the bashCommand variable). subprocess.run() does not use a shell unless specified to using the shell=True parameter. You can read this answer for further details. TL;DR: subprocess.run() runs the program directly instead of invoking an unknown shell, and this behavior depends on the user and OS configuration.

Full answer by user7215: https://askubuntu.stackexchange.com/a/1565884 (CC BY-SA 4.0).

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