'parted Mklabel' Raises An Error Through Python Subprocess

I want to format a hard disk via python script using subprocess.Popen. Typing the following command inside a shell worls fine. Just pay attention with this command! parted /dev/sdh

Solution 1:

By adding the -s option to the command as follows(ignore output), parted exits with success.

Popen('parted -s /dev/sdh mklabel gpt', shell=True)