It’s cultural. In Python, you don’t write to other classes’ instance or class variables. In Java, nothing prevents you from doing the same if you really want to – after all, you can always edit the source of the class itself to achieve the same effect. Python drops that pretence of security and encourages programmers … Read more
You use: public scope to make that property/method available from anywhere, other classes and instances of the object. private scope when you want your property/method to be visible in its own class only. protected scope when you want to make your property/method visible in all classes that extend current class including the parent class. If … Read more
The official tutorial may be of some use to you. Class Package Subclass(same pkg) Subclass(diff pkg) World public + + + + + protected + + + + no modifier + + + private + + : accessible blank : not accessible