Brother_QL not printing with python script

[futonkris]

import subprocess

cmd = [
"brother_ql",
"-m",
"QL-820NWB",
"-p",
"usb://0x04f9:0x209d_Љ",
"-b",
"pyusb",
"print",
"-l",
"62",
"background.png"
]

subprocess.run(cmd)

can this code and it returned CompletedProcess(args=['brother_ql', '-m', 'QL-820NWB', '-p', 'usb://0x04f9:0x209d_Љ', '-b', 'pyusb', 'print', '-l', '62', 'background.png'], returncode=1)

but nothing came out of the printer, anyone with any know how?

[FriedrichFroebel]

You should probably run this command in standalone mode or at least have a look at stdout and stderr and report it here - otherwise it is hard to say anything about this.