def read_previous_results():
    """Read results of previous run.

    :return: dictionary of results if exist
    """
    try:
        with open(settings.LOAD_TESTS_PATHS['load_previous_tests_results'],
                  'r') as results_file:
            results = jsonutils.load(results_file)
    except (IOError, __HOLE__):
        results = {}
    return results
dataset/ETHPy150Open openstack/fuel-web/nailgun/nailgun/test/performance/base.py/read_previous_results