Question

Design and develop a class named Person in Python that contains two data attributes that stores the first name and last name of a person and appropriate accessor and mutator methods. Implement a method named __repr__ that outputs the details of a person.

Then Design and develop a class named Student that is derived from Person, the __init__ for which should receive first name and last name from the class Person and also assigns values to student id, course, and teacher name. This class needs to redefine the __repr__ method to person details as well as details of a student. Include appropriate __init__.

Design and develop a class named Teacher that is derived from Person. This class should contain data attributes for the course name and salary. Include appropriate __init__. Finally, redefine the __repr__ method to include all teacher information in the printout.

Implement an application/driver that creates at least two student objects and two teacher objects with different values and calls __repr__ for each.

Answer 1

Code is as follows:

class Person : #base class

    firstName =""

    lastName =""

   

    #constructor for base class

    def __init__(self,firstName,lastName):

        self.firstName = firstName

        self.lastName = lastName

   

    #__repr__ method

    def __repr__(self):

        print("firstname \t lastname")

        print (self.firstName + '\t' + self.lastName)

   

    #method to get the first name

    def get_firstName(self):

        return self.firstName

    #method to get the last name

    def get_lastName(self):

        return self.lastName

class Student(Person): #child class

    studentId =0

    courseName = ""

    teacherName =""

    #constructor for child class

    def __init__(self,firstName,lastName,studentId,courseName,teacherName):

        self.studentId = studentId

        self.courseName =courseName

        self.teacherName = teacherName

        #call base class constructor

        super(Student,self).__init__(firstName,lastName)

       

    #override the __repr__ method of base class

    def __repr__(self):

        print (self.get_firstName() + '\t\t' + self.get_lastName() + '\t\t' + str(self.studentId) + '\t\t' + self.courseName + '\t\t' + self.teacherName)

class Teacher(Person):#child class

    courseName = ""

    salary = 0.0

    #constructor for child class

    def __init__(self,firstName,lastName,courseName,salary):

        self.courseName =courseName

        self.salary = salary

        #call base class constructor

        super(Teacher,self).__init__(firstName,lastName)

       

    #override the __repr__ method of base class  

    def __repr__(self):

        print (self.get_firstName() + '\t\t' + self.get_lastName() + '\t\t' + self.courseName + '\t\t' + str(self.salary))

       

#main class, create two instances of Student and Teacher and call __repr__ method for them

student1 = Student("Alice", "cook",1,"CS","Will Jones")

student2 = Student("Bob", "White",2,"IT","Tim Jones")

teacher1 = Teacher("Will","Jones","CS",23400.0)

teacher2 = Teacher("Tim","Jones","IT",35000.0)

print("============== Student Information =====================================")

print("firstname\tlastname\tStudentId\tCourse\tTeacherName")

student1.__repr__()

student2.__repr__()

print("============== END ====================================================")

print("============== Teacher Information =====================================")

print("firstname\tlastname\tCourse Name\tSalary")

teacher1.__repr__()

teacher2.__repr__()

print("============== END ====================================================")

Screen shot of the code for your reference and indentation:

Output:

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