nondeterministic behavior when defining custom post_load method in class inheriting SQLAlchemySchema

[beaulian]

Hi,

I found a post_load method defined in LoadInstanceMixin class called make_instance, if there exists a class inheriting SQLAlchemySchema and then I define a post_load method called f(self, data, **kwargs), it will execute before make_instance since the execution order is alphabetical according to dir builtin function. If the post_load method calls t, then it will execute after the make_instance. As a result, parameter data in function f is a dict and is an object in function g.

[lafrech]

Discussed a while ago in marshmallow-code/marshmallow#600.

Since order is not enforced, if it matters, use a single processor. Here, override make_instance and add your processing in there.

[beaulian]

OK, thanks