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

Can confirm that this is true. My HP Envy accepts ps print, but for all other commands, it prints out "%! /print {(%stdout) (w) file dup 3 2 roll writestring flushfile} def /== {128 str". This is the value stored in PS_IOHACK in the helper.py file, but I don't know why it prints this.