Abstract Polymorphism using Base Class Interfaces Dry Run in PYTHON

Abstract Polymorphism using Base Class Interfaces is an interactive PYTHON dry run visualizer from the Polymorphism programs section. Study the source code, then use the execution controls to follow each step, variable update, highlighted line, and console output.

This page provides a browser-based dry run with source-code highlighting, auto-scroll, voice narration controls, and execution output for learning the program step by step.

Abstract Polymorphism using Base Class Interfaces Program Code

from abc import ABC, abstractmethod

class Payment(ABC):
    @abstractmethod
    def pay(self, amount): pass

class CreditCard(Payment):
    def pay(self, amount): return f"Paid ${amount} via Card"

class PayPal(Payment):
    def pay(self, amount): return f"Paid ${amount} via PayPal"

def process_bill(payment_obj, amount):
    print(payment_obj.pay(amount))

process_bill(CreditCard(), 100)
process_bill(PayPal(), 250)

View the complete Polymorphism programs page.