Hi, in _bootstrapfields.py we have "class Container(Field):" (line 184) and "class Iterable(Container):" (line 196) Then we have in line 404 of _fields.py "class Dict(MinMaxLen, Iterable, Field):" Should 'Field' be deleted because it is inherited from Iterable - Container? And from AbstractCollection (line 313)? Regards, Egon