Poorvalidatorinheritance

The inheritance model for

and its subclass

does not seem semantically valid. This issue arose when attempting to differentiate the two by duck typing the validators.

is not really a type of

.

validates numbers, and

validates sequences and collections. This indicates that their domains are disjoint.

It would be more appropriate for the

validator to have an attribute named something like

which is an instance of the

validator.

This issue is equivalent to extending an

class to create a

class. A

has an

, but it is not a type of

itself.

该提问来源于开源项目：marshmallow-code/marshmallow