Unable to set Mapping's "uknown" attribute with MappingSchema

[akheron]

When created imperatively, I can set a Mapping's "unknown" attribute:

my_mapping = SchemaNode(Mapping(unknown='raise'))
my_mapping.add(...)

When created declaratively, there's no way to do this, though:

class MyMapping(MappingSchema):  # :(
    ...

The same applies to Sequence's "scalar" attribute and SequenceSchema.

[mcdonc]

Sorry for the extreme delay responding. The way to do this is:

themapping = MyMapping()
themapping.typ.unknown = 'raise'

This is unlikely to change unless someone comes up with a better idea.