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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 call_func(self, req, *args, **kwargs):
 """Add json_error_formatter to any webob HTTPExceptions."""

        try:
            return super(SdkWsgify, self).call_func(req, *args, **kwargs)
        except webob.exc.HTTPException as exc:
            msg = ('encounter %(error)s error') % {'error': exc}
            LOG.debug(msg)
            exc.json_formatter = json_error_formatter
            code = exc.status_int
            explanation = six.text_type(exc)

            fault_data = {
                'overallRC': 400,
                'rc': 400,
                'rs': code,
                'modID': SDKWSGI_MODID,
                'output': '',
                'errmsg': explanation}
            exc.text = six.text_type(json.dumps(fault_data))
            raise exc