Using Python 3.6 in Windows (native), with Zorro Beta 1.85.1:
import os
os.system("C:\ZorroBeta\zorro -run Workshop1")
Zorro ("Z Client") opens, runs, closes. os.system returns 0.
By the way, this command line does not work:
... but this does:
Perhaps there was a change in the command line rules?
Sure enough, in your script, I see this:
zorro_call = '{} ConvertData -run -i {} -i {} -a {} -d TCK'.format(
... should be
zorro_call = '{} -run ConvertData -i {} -i {} -a {} -d TCK'.format(
... and there's a similar line in there in need of correction.