utils.py 文件源码

def __exit__(self, exc_type, exc_value, traceback):
        if exc_type is None:
            return
        for dj_exc_type in (
                DataError,
                OperationalError,
                IntegrityError,
                InternalError,
                ProgrammingError,
                NotSupportedError,
                DatabaseError,
                InterfaceError,
                Error,
        ):
            db_exc_type = getattr(self.wrapper.Database, dj_exc_type.__name__)
            if issubclass(exc_type, db_exc_type):
                dj_exc_value = dj_exc_type(*exc_value.args)
                dj_exc_value.__cause__ = exc_value
                # Only set the 'errors_occurred' flag for errors that may make
                # the connection unusable.
                if dj_exc_type not in (DataError, IntegrityError):
                    self.wrapper.errors_occurred = True
                six.reraise(dj_exc_type, dj_exc_value, traceback)