orm.py 文件源码

python
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项目:maas 作者: maas 项目源码 文件源码
def rollback():
    """Context manager that always rolls back to a savepoint.

    This is useful when using hypothesis (https://hypothesis.readthedocs.org/)
    which repeatedly runs tests to discover edge cases.
    """
    sid = transaction.savepoint()
    try:
        yield
    finally:
        transaction.savepoint_rollback(sid)
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