def outerjoin(left, right, onclause=None, join_to_left=None):
    return _ORMJoin(left, right, onclause, True)
Return true if the object is a mapping (dict etc.).
dataset/ETHPy150Open goFrendiAsgard/kokoropy/kokoropy/packages/sqlalchemy/orm/util.py/outerjoin--crossover with--dataset/ETHPy150Open GeekTrainer/Flask/Work/Trivia - Module 5/env/Lib/site-packages/jinja2/tests.py/test_mapping