While adding instance_of validators using attrs I have found an issue to do that when classes keep references to each other, causing a circular dependency problem where modules try to import each other and/or one of the classes in the same file has not been defined yet.
To solve this, try to remove these circular dependencies and if not possible, create interfaces. I believe that most of these were added because callback chains were not used and these references had to be kept. I think #21 will help solving this.
While adding
instance_ofvalidators using attrs I have found an issue to do that when classes keep references to each other, causing a circular dependency problem where modules try to import each other and/or one of the classes in the same file has not been defined yet.To solve this, try to remove these circular dependencies and if not possible, create interfaces. I believe that most of these were added because callback chains were not used and these references had to be kept. I think #21 will help solving this.