/student_data_polymorphism

Primary LanguagePython

Polymorphism

A concept related to the object oriented approach of programming.

Polymorphism is one of the core concepts in OOP languages, it describes the concept that different classes can be used with same interface. Each of these classes can provide its own implementation of the interface. If a method sometimes referred to as an interface is overridden in another class it is said to be polymorphic. This means it can be used to produce different results through the same method.

devops_student [Parent/ Base Class]

  • Attributes
    • current_grade private
    • current_trainer public
  • Methods
    • print_details public
    • change_current_grade private

student_data [Child/ Derived Class]

  • Methods
    • print_details public

Here the method print_details has been made polymorphic as it has been overridden and using a for loop printed out for both classes. It comes out different showing that the class is using polymorphism.

Two classes that can be iterated and provide outputs for each method call through a polymorphic variable such as instance are known as polymorphic methods.

Ross = StudentData(90, "Hulk Hagen")
John = DevOpsStudent(70, "Billy bog-man")

for instance in (Ross, John):
    print(instance)
    print(instance.print_details())

The output for this would be different for each instance, but essentially this for loop doesn't care what is in the print_details() it just knows they are in both classes. Therefore they can both be accessed this way.