def __retrieve_data(self):
if self.__eof is True:<EOL><INDENT>return b'<STR_LIT>'<EOL><DEDENT>logging.debug("<STR_LIT>")        <EOL>block = self.read(self.__block_size)<EOL>if block == b'<STR_LIT>':<EOL><INDENT>self.__log.debug("<STR_LIT>")<EOL>self.__eof = True<EOL><DEDENT>return block<EOL>
Read more data from the file.