Re Try loop for "net use..." failures

[tester_V]

Gribouillis, thank you for the snipped, but it produces errors:

line 373, in check_call
raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['net', 'use', 'Z:', '/delete', '/yes']' returned non-zero exit status 2.

During handling of the above exception, another exception occurred:
line 94, in <module>
except CalledProcessError as ss:
NameError: name 'CalledProcessError' is not defined

Thank you!