Question

3. Design and implement a class called ClassStats, in a file called stats.py, that includes: • private attributes for a student number and status (pass or fail), • private class variables to keep track of the total number of students with status pass and the total number of students with status fail, • a constructor with default values (empty strings) for all instance variables, • an accessor method for each instance variable and also for the class vari- ables, • methods to compute and return the percentage of passes and fails. Include a main function to test your ClassStats class by reading data from a passfail.txt file and creating a list of ClassStats objects. Each line of the passfail.txt file contains a student number and the student's designation (pass or fail). Your output should include the number of students in the list and the percentage of passes and fails.

Answer 1

class ClassStats:
    def __init__(self, number, status):
        self.__status = status
        self.__number = number

    def get_status(self):
        return self.__status

    def get_number(self):
        return self.__number


if __name__ == "__main__":

    with open("passfail.txt", 'r') as file:
        data = file.readlines()

    students = []
    passes = []
    failed = []
    j = 0
    print(data)
    for line in data:
        # words.append(line.split("\n"))
        x, y = line.split()
        print(x, y)
        students.append(ClassStats(int(x), y))

    for classes in students:
        if classes.get_status() == "pass":
            passes.append(classes)
        else:
            failed.append(classes)


def percentage(list1, list2, total):
    passed = (len(list1) / len(total)) * 100
    fails = 100 - passed
    print("The Percentage Of Student Passed : ", passed)
    print("The Percentage of Student Failed : ", fails)


print(students)
print(passes)
print(failed)
percentage(passes, failed, students)