def __call__(self, request, response, api_version=None, **kwargs):
        api_version = int(api_version) if api_version is not None else api_version
        if not self.catch_exceptions:
            exception_types = ()
        else:
            exception_types = self.api.http.exception_handlers(api_version)
            exception_types = tuple(exception_types.keys()) if exception_types else ()
        try:
            self.set_response_defaults(response, request)

            lacks_requirement = self.check_requirements(request, response)
            if lacks_requirement:
                response.data = self.outputs(lacks_requirement,
                                             **self._arguments(self._params_for_outputs, request, response))
                return

            input_parameters = self.gather_parameters(request, response, api_version, **kwargs)
            errors = self.validate(input_parameters)
            if errors:
                return self.render_errors(errors, request, response)

            self.render_content(self.call_function(**input_parameters), request, response, **kwargs)
        except falcon.HTTPNotFound:
            return self.api.http.not_found(request, response, **kwargs)
        except exception_types as exception:
            handler = None
            if type(exception) in exception_types:
                handler = self.api.http.exception_handlers(api_version)[type(exception)]
            else:
                for exception_type, exception_handler in \
                  tuple(self.api.http.exception_handlers(api_version).items())[::-1]:
                    if isinstance(exception, exception_type):
                        handler = exception_handler
            handler(request=request, response=response, exception=exception, **kwargs)
Run all unit tests and doctests.
dataset/ETHPy150Open timothycrosley/hug/hug/interface.py/HTTP.__call__--crossover with--dataset/ETHPy150Open circuits/circuits/fabfile/__init__.py/test