I tried to connect to my printer by writing: python pret.py {192.168.1.27} pjl and no luck I tried all languages and it keep outputting the same result I have a HP ENVY 4500 series and this is a nmap scan I did on my printer

The Envy -- like most inkjets -- does not support PostScript, therefore talking in "ps" mode with the device will not work (instead, each PostScript command sent by PRET to the device is interpreted as plain text "to be printed").