code: def read_files(self, condition='*'):
          
          checker = condition2checker(condition)
          return RarFileImplementation.read_files(self, checker)
docs: Read specific files from archive into memory.
          If "condition" is a list of numbers, then return files which have those positions in infolist.
          If "condition" is a string, then it is treated as a wildcard for names of files to extract.
          If "condition" is a function, it is treated as a callback function, which accepts a RarInfo object 
              and returns boolean True (extract) or False (skip).
          If "condition" is omitted, all files are returned.
          
          Returns list of tuples (RarInfo info, str contents)