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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def read(self, read_list, verbose=False, log=False):
 """Read the content, returning a list of ReadingData objects."""

        ret = []
        mem_tot = _get_mem_total()
        if mem_tot is not None and mem_tot <= self.REACH_MEM + self.MEM_BUFFER:
            logger.error(
                "Too little memory to run reach. At least %s required." %
                (self.REACH_MEM + self.MEM_BUFFER)
                )
            logger.info("REACH not run.")
            return ret

        # Prep the content
        self.prep_input(read_list)

        if self.num_input > 0:
            # Run REACH!
            logger.info("Beginning reach.")
            args = [
                'java',
                '-Dconfig.file=%s' % self.conf_file_path,
                '-jar', self.exec_path
                ]
            p = subprocess.Popen(args, stdout=subprocess.PIPE,
                                 stderr=subprocess.PIPE)
            log_file_str = ''
            for line in iter(p.stdout.readline, b''):
                log_line = 'REACH: ' + line.strip().decode('utf8')
                if verbose:
                    logger.info(log_line)
                if log:
                    log_file_str += log_line + '\n'
            if log:
                with open('reach_run.log', 'ab') as f:
                    f.write(log_file_str.encode('utf8'))
            p_out, p_err = p.communicate()
            if p.returncode:
                logger.error('Problem running REACH:')
                logger.error('Stdout: %s' % p_out.decode('utf-8'))
                logger.error('Stderr: %s' % p_err.decode('utf-8'))
                raise ReachError("Problem running REACH")
            logger.info("Reach finished.")
            ret = self.get_output()
            self.clear_input()
        return ret