Matrix Array - Python Programming Exercise

# Program developed by: Programmer 1, Programmer 2

# Initialize a 2D list to store marks for 2 groups of 10 students each
marks = []

# Loop through each group (2 groups)
for group in range(2):
    group_marks = []  # Temporary list to store marks for the current group
    print(f"Enter marks for Group {group + 1} (10 students):")
    
    # Loop through each student in the group
    for student in range(10):
        while True:
            try:
                mark = float(input(f"Enter mark for student {student + 1}: "))
                if mark < 0 or mark > 100:
                    print("Please enter a valid mark between 0 and 100.")
                else:
                    group_marks.append(mark)  # Add the mark to the group's list
                    break
            except ValueError:
                print("Please enter a valid number for the mark.")  # Handle invalid input
                
    marks.append(group_marks)  # Add the group's marks to the main list

# Calculate and display the average for each group
for group_index in range(2):
    group_average = sum(marks[group_index]) / len(marks[group_index])
    print(f"The average mark for Group {group_index + 1} is: {group_average:.2f}")

 Output

Enter marks for Group 1 (10 students):
Enter mark for student 1: 85
Enter mark for student 2: 90
Enter mark for student 3: 78
Enter mark for student 4: 88
Enter mark for student 5: 92
Enter mark for student 6: 79
Enter mark for student 7: 84
Enter mark for student 8: 77
Enter mark for student 9: 90
Enter mark for student 10: 89
Enter marks for Group 2 (10 students):
Enter mark for student 1: 68
Enter mark for student 2: 75
Enter mark for student 3: 80
Enter mark for student 4: 82
Enter mark for student 5: 70
Enter mark for student 6: 76
Enter mark for student 7: 79
Enter mark for student 8: 72
Enter mark for student 9: 84
Enter mark for student 10: 67
The average mark for Group 1 is: 84.20
The average mark for Group 2 is: 75.30