code: def program_supports_compression (program, compression):
      
      if program in ('tar', ):
          return compression in ('gzip', 'bzip2', 'xz', 'lzip', 'compress', 'lzma') + py_lzma
      elif program in ('star', 'bsdtar', 'py_tarfile'):
          return compression in ('gzip', 'bzip2') + py_lzma
      return False
docs: Decide if the given program supports the compression natively.
      @return: True iff the program supports the given compression format
        natively, else False.