polymorphism.py

class Html:
    def __init__(self, content):
        self.content = content
 
    def render(self):             
        raise NotImplementedError("Subclass must implement render method")
 

class Heading(Html):
    def render(self):
        return f'<h1>{self.content}</h1>'
 

class Div(Html):
    def render(self):
        return f'<div>{self.content}</div>'

      
tags = [Div('Some content'), Heading('My Amazing Heading'), Div('Another div')]
 
for tag in tags:
    print(str(tag) + ': ' + tag.render())