def _local_tasks():
    if getattr(_local, 'tasks', None) is None:
        _local.tasks = set()
    return _local.tasks
runs the specified metrics/tests on the passed row (which is a dict)
dataset/ETHPy150Open mozilla/kitsune/kitsune/search/models.py/_local_tasks--crossover with--dataset/ETHPy150Open sunlightlabs/clearspending/completeness/__init__.py/MetricTester.run_metrics