format username:password?

[uwualex]

I have tried the exact same thing from here:https://hashcat.net/wiki/doku.php?id=frequently_asked_questions#how_can_i_show_previously_cracked_passwords_and_output_them_in_a_specific_format_eg_emailpassword


I spent about 4 hours on google and i still can't figure it out..
As of right now im using a simple Python script but at the same time im genuinely curious on why it doesnt work.