Notes

# Nested dictionary to store attendance data
attendance_data = {
'Math': {'Alice': [80, 90, 85], 'Bob': [75, 85, 80], 'Charlie': [90, 95, 92]},
'Science': {'Alice': [88, 92, 87], 'Bob': [78, 90, 85], 'Charlie': [94, 96, 93]},
'English': {'Alice': [85, 88, 90], 'Bob': [80, 82, 78], 'Charlie': [88, 90, 92]}
}

def calculate_average_attendance(student_name):
total_percentage = 0
total_subjects = 0

# Iterate over subjects
for subject, students in attendance_data.items():
# Check if the student is present in the subject
if student_name in students:
# Calculate the average attendance for the student in the subject
total_percentage += sum(students[student_name]) / len(students[student_name])
total_subjects += 1

# Calculate the overall average attendance for the student
if total_subjects > 0:
overall_average = total_percentage / total_subjects
print(f"The overall average attendance for {student_name} is: {overall_average:.2f}%")
else:
print(f"{student_name} not found in any subjects.")

# Example: Calculate overall average attendance for 'Alice'
calculate_average_attendance('Alice')