Classes: Learner and Instructor - Python Programming Exercise

# Base class Person
class Person:
    def __init__(self, name):
        # Initialize the person's name
        self.name = name

    def Greet(self):
        # Greet method to say hello
        print(f"Hello, my name is {self.name}.")

    def SetAge(self, age):
        # Set the age method
        self.age = age

# Derived class Student that inherits from Person
class Student(Person):
    def __init__(self, name):
        # Initialize the student with a name
        super().__init__(name)

    def GoToClasses(self):
        # Method to print when the student goes to class
        print("I’m going to class.")

    def ShowAge(self):
        # Method to show the student's age
        print(f"My age is: {self.age} years old.")

# Derived class Teacher that inherits from Person
class Teacher(Person):
    def __init__(self, name, subject):
        # Initialize the teacher with a name and subject
        super().__init__(name)
        self.__subject = subject  # Private attribute for subject

    def Explain(self):
        # Method to explain the subject
        print(f"Explanation begins for {self.__subject}.")

    def SetSubject(self, subject):
        # Method to set the subject for the teacher
        self.__subject = subject

# Test class to demonstrate the functionality
class StudentAndTeacherTest:
    @staticmethod
    def Main():
        # Create a Person object and greet
        person = Person("John")
        person.Greet()

        # Create a Student object, set age, greet, and show age
        student = Student("Alice")
        student.SetAge(21)
        student.Greet()
        student.ShowAge()

        # Create a Teacher object, set age, greet, and explain subject
        teacher = Teacher("Mr. Smith", "Mathematics")
        teacher.SetAge(30)
        teacher.Greet()
        teacher.Explain()


# Run the test class
StudentAndTeacherTest.Main()

 Output

python person_inheritance.py
Hello, my name is John.
Hello, my name is Alice.
My age is: 21 years old.
Hello, my name is Mr. Smith.
Explanation begins for Mathematics.