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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 errors(self, batch_id, halt_on_error=True):
 """Retrieve Batch errors to ThreatConnect API. .. code-block:: javascript [{ "errorReason": "Incident incident-001 has an invalid status.", "errorSource": "incident-001 is not valid." }, { "errorReason": "Incident incident-002 has an invalid status.", "errorSource":"incident-002 is not valid." }] Args: batch_id (str):
 The ID returned from the ThreatConnect API for the current batch job. halt_on_error (bool, default:True):
 If True any exception will raise an error. """

        errors = []
        try:
            r = self.tcex.session.get('/v2/batch/{}/errors'.format(batch_id))
            # if r.status_code == 404:
            #     time.sleep(5)  # allow time for errors to be processed
            #     r = self.tcex.session.get('/v2/batch/{}/errors'.format(batch_id))
            self.tcex.log.debug(
                'Retrieve Errors for ID {}: status code {}, errors {}'.format(
                    batch_id, r.status_code, r.text
                )
            )
            # self.tcex.log.debug('Retrieve Errors URL {}'.format(r.url))
            # API does not return correct content type
            if r.ok:
                errors = json.loads(r.text)
            # temporarily process errors to find "critical" errors.
            # FR in core to return error codes.
            for error in errors:
                error_reason = error.get('errorReason')
                for error_msg in self._critical_failures:
                    if re.findall(error_msg, error_reason):
                        self.tcex.handle_error(10500, [error_reason], halt_on_error)
            return errors
        except Exception as e:
            self.tcex.handle_error(560, [e], halt_on_error)