Best Python code snippet using autotest_python
models.py
Source:models.py  
...335                    query_set, 'host-labels',336                    alias=alias, extra_join_condition=condition)337            query_set = self._add_select_ifnull(query_set, alias, label_name)338        return query_set339    def _join_one_iteration_key(self, query_set, result_key, first_alias=None):340        alias = 'iteration_result_' + result_key341        iteration_query = IterationResult.objects.filter(attribute=result_key)342        if first_alias:343            # after the first join, we need to match up iteration indices,344            # otherwise each join will expand the query by the number of345            # iterations and we'll have extraneous rows346            iteration_query = iteration_query.extra(347                    where=['%s.iteration = %s.iteration'348                           % (_quote_name(alias), _quote_name(first_alias))])349        query_set = Test.objects.join_custom_field(query_set, iteration_query,350                                                   alias, left_join=False)351        # select the iteration value and index for this join352        query_set = self._add_select_value(query_set, alias)353        if not first_alias:354            # for first join, add iteration index select too355            query_set = self._add_custom_select(356                    query_set, 'iteration_index',357                    _quote_name(alias) + '.iteration')358        return query_set, alias359    def _join_iteration_results(self, test_view_query_set, result_keys):360        """Join the given TestView QuerySet to IterationResult for one result.361        The resulting query looks like a TestView query but has one row per362        iteration.  Each row includes all the attributes of TestView, an363        attribute for each key in result_keys and an iteration_index attribute.364        We accomplish this by joining the TestView query to IterationResult365        once per result key.  Each join is restricted on the result key (and on366        the test index, like all one-to-many joins).  For the first join, this367        is the only restriction, so each TestView row expands to a row per368        iteration (per iteration that includes the key, of course).  For each369        subsequent join, we also restrict the iteration index to match that of370        the initial join.  This makes each subsequent join produce exactly one371        result row for each input row.  (This assumes each iteration contains372        the same set of keys.  Results are undefined if that's not true.)373        """374        if not result_keys:375            return test_view_query_set376        query_set, first_alias = self._join_one_iteration_key(377                test_view_query_set, result_keys[0])378        for result_key in result_keys[1:]:379            query_set, _ = self._join_one_iteration_key(query_set, result_key,380                                                        first_alias=first_alias)381        return query_set382    def _join_job_keyvals(self, query_set, job_keyvals):383        for job_keyval in job_keyvals:384            alias = 'job_keyval_' + job_keyval385            keyval_query = JobKeyval.objects.filter(key=job_keyval)386            query_set = Job.objects.join_custom_field(query_set, keyval_query,387                                                       alias)388            query_set = self._add_select_value(query_set, alias)389        return query_set390    def _join_iteration_attributes(self, query_set, iteration_attributes):391        for attribute in iteration_attributes:392            alias = 'iteration_attribute_' + attribute393            attribute_query = IterationAttribute.objects.filter(...Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.
You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.
Get 100 minutes of automation test minutes FREE!!
