100+ Python challenging programming exercises 6

Question 51

Define a class named American and its subclass NewYorker.

Hints: Use class Subclass(ParentClass) to define a subclass.

定义一个名为American的类及其子类NewYorker。

提示：使用class Subclass（ParentClass）来定义子类。

Solution:

class American:  
    def __init__(self, name, age):  
        self.name = name  
        self.age = age  
  
    def introduce(self):  
        return f"Hello, my name is {self.name} and I am {self.age} years old."  
  
class NewYorker(American):  
    def introduce(self):  
        return f"Yo, my name is {self.name} and I am from New York. I'm {self.age} years old."

anAmerican = American('Tom',8)
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