code: def header_match(cls, header):
          '''
          Parse the 4-line (320-byte) library member header.
          '''
          mo = cls.header_re.match(header)
          if mo is None:
              msg = f'Expected {cls.header_re.pattern!r}, got {header!r}'
              raise ValueError(msg)
          return {
              'name': mo['name'].decode().strip(),
              'label': mo['label'].decode().strip(),
              'type': mo['type'].decode().strip(),
              'created': strptime(mo['created']),
              'modified': strptime(mo['modified']),
              'sas_version': float(mo['version']),
              'os_version': mo['os'].decode().strip(),
              'namestr_size': mo['descriptor_size'],
          f header_match(cls, header):
          '''
          Parse the 4-line (320-byte) library member header.
          '''
          mo = cls.header_re.match(header)
          if mo is None:
              msg = f'Expected {cls.header_re.pattern!r}, got {header!r}'
              raise ValueError(msg)
          return {
              'name': mo['name'].decode().strip(),
              'label': mo['label'].decode().strip(),
              'type': mo['type'].decode().strip(),
              'created': strptime(mo['created']),
              'modified': strptime(mo['modified']),
              'sas_version': float(mo['version']),
              'os_version': mo['os'].decode().strip(),
              'namestr_size': mo['descriptor_size'],
          }
docs: Parse the 4-line (320-byte) library member header.