• Python does not provide interface concept explicitly. It provides classes which can be used as either abstract classes or interfaces. • Interface is a pure API specification which contains no implementation whereas Abstract is partial implementation, but it does not need to be entirely abstract. • If an interface has numerous methods, then it become complex to implement methods over. Web.
Abstract classes can have constants, members, method stubs (methods without a body) and defined methods, whereas interfaces can only have constants and methods stubs. Methods and members of an abstract class can be defined with any visibility, whereas all methods of an interface must be defined as public (they are defined public by default).
Because Python doesn't have (and doesn't need) a formal Interface contract, the Java-style distinction between abstraction and interface doesn't exist. If someone goes through the effort to define a formal interface, it will also be an abstract class. The only differences would be in the stated intent in the docstring.
The difference between a class and an interface is that a class is a reference type which is a blueprint to instantiate an object and interface is a reference type which cannot be used to instantiate an object. A class can implement many interfaces. But it can only extend one superclass. In interface can inherit many interfaces but there cannot.
Answer (1 of 3): Instead of what focus on why abstract class or interface ? Suppose developer 1 wants to use functions of module(class) developed by developer 2 and.