Question

The objective of this homework assignment is to demonstrate proficiency with classes and objects. This assignment creates a GradeBook class that manages a list of quiz grades, computes the average and maintains a count of GradeBook objects, one per student. Your program needs to support just two students. Here's how your program should start:

$ python3 hwk7.py
Please enter the name for Student 1: Mary
There are 1 students in the GradeBook.
Please enter the name for Student 2: Hadalam
There are 2 students in the GradeBook.
Grade Book
0: Exit
1: Enter quiz grade for Student 1
2: Enter quiz grade for Student 2
3: Display current grades for all students
Please enter a choice:

When the program first starts up, the user is queried to enter the names for two students. A count of how many GradeBook objects have been created is maintained in a class variable within GradeBook. This variable is to be updated in the constructor and used for the display of the count. See class vs instance variables (Links to an external site.) for reference.

Your class should include the following methods:

a constructor - __init__(self, name): The construct should two instance variables, self.name and self.grades. The name parameter is stored in self.name and self.grades should be created as an empty list.

quizScore(self, score): This method is called to add the score to self.grades

currentAverage(self): This method computes the average of the scores in self.grades and returns the result

Class variables: count this variable is used to count how many GradeBook objects have been created GradeBook.count should be initialized to 0 outside of any of the methods. GradeBook.count should be incremented by one inside of the constructor Instance variables self.name - the name of the student self.grades - the list of quiz scores for the student

Each GradeBook object (one per student) needs to be created before the while loop. Be sure to include the student's name when creating the object.

In order to test your GradeBook class, you'll implement a menu driven interface, providing the choices as shown in the image above. When the user chooses to enter a quiz grade for Student 1, Student 1's quiz list should be updated. When the user chooses to enter a quiz grade for Student 2, Student 2's quiz list should be updated. When the user chooses to display the current grades for all students, the averages for Student 1 is computed via currentAverage method and returned to be printed in the main program (not in currentAverage), and then the same is done with Student 2. The name of each student is available as instance variable in each object, e.g. student1.name, and should be included in the display. That is, the names should not come from variables outside of the objects. For the purposes of this assignment, the number of students is fixed at two. You do not need to maintain a list of objects. Just use a separate variable for each object - e.g. student1 and student2. If you have implemented the instance and class variables correctly, entering a score for one student should not change the other student's average. If that happens, you are probably using a class variable instead of an instance variable for the list of quiz scores.

Answer 1

The GradeBook class for the Python homework manages quiz grades and student information, utilizing class and instance variables to maintain separate grade lists and object counts.

Step-by-step explanation:

The GradeBook class in the context of this Python homework involves creating and managing student grades. In the Python program, the user inputs names for two students, and the program tracks the number of GradeBook objects via a class variable. Each GradeBook object corresponds to an individual student and holds personal attributes like the student's name and a list of quiz grades.

The class includes a constructor to initialize these attributes, a method to add quiz grades (quizScore), and a method to compute current grades average (currentAverage). A simple user-interface loop is provided to interact with the GradeBook objects, allowing for quiz grades to be added and current averages to be displayed for each student. The design ensures individual grade lists are separate and the count of objects is appropriately managed, according to the given requirements.