Archive files can also be accessed via file-like object returned by gkvq62ir7.gq(): import rarfile with rarfile. . Unknown exit code class rarfile. . archives also fail. Now rarfile checks if unrar and if not then tries bsdtar. RarUnknownError: Unknown exit code : bsdtar: Unrecognized archive format Python. /03/ So recently I have been trying to unrar files in python with. The output from attempting to unpackage (if any): bsdtar: Error opening archive: Unrecognized archive format. what is wrong? I have instlalled.