cal.py

def calculate_aggregate():
    # Heading
    print("===================================================")
    print("This calculator is developed by Engr. Sifat Ullah Marwat")
    print("===================================================")
    print("\nWelcome to the Aggregate Calculator!")
    print("Please enter the following details (leave blank for zero):")

    # Function to get marks with default value of 0 if input is empty
    def get_marks(prompt):
        while True:
            try:
                value = input(prompt)
                if value.strip() == "":  # If input is empty, default to 0
                    return 0.0
                value = float(value)
                if value < 0:
                    print("Marks cannot be negative. Please enter a valid number.")
                else:
                    return value
            except ValueError:
                print("Invalid input. Please enter a numeric value.")

    # Input for SSC
    ssc_obtained = get_marks("Enter SSC Obtained Marks: ")
    ssc_total = get_marks("Enter SSC Total Marks: ")

    # Input for HSSC
    hssc_obtained = get_marks("Enter HSSC Obtained Marks: ")
    hssc_total = get_marks("Enter HSSC Total Marks: ")

    # Input for BA/BSc
    ba_bsc_obtained = get_marks("Enter BA/BSc Obtained Marks: ")
    ba_bsc_total = get_marks("Enter BA/BSc Total Marks: ")

    # Input for MA/MSc
    ma_msc_obtained = get_marks("Enter MA/MSc Obtained Marks: ")
    ma_msc_total = get_marks("Enter MA/MSc Total Marks: ")

    # Input for ADE/BED
    ade_bed_obtained = get_marks("Enter ADE/BED Obtained Marks: ")
    ade_bed_total = get_marks("Enter ADE/BED Total Marks: ")

    # Input for Med
    med_obtained = get_marks("Enter Med Obtained Marks: ")
    med_total = get_marks("Enter Med Total Marks: ")

    # Input for MPhil
    mphil_obtained = get_marks("Enter MPhil Obtained Marks: ")
    mphil_total = get_marks("Enter MPhil Total Marks: ")

    # Input for PhD
    phd_obtained = get_marks("Enter PhD Obtained Marks: ")
    phd_total = get_marks("Enter PhD Total Marks: ")

    # Handle division by zero for total marks
    def safe_divide(numerator, denominator):
        return numerator / denominator if denominator != 0 else 0

    # Calculate aggregate
    aggregate = (
        (safe_divide(ssc_obtained * 15, ssc_total)) +
        (safe_divide(hssc_obtained * 20, hssc_total)) +
        (safe_divide(ba_bsc_obtained * 20, ba_bsc_total)) +
        (safe_divide(ma_msc_obtained * 15, ma_msc_total)) +
        (safe_divide(ade_bed_obtained * 15, ade_bed_total)) +
        (safe_divide(med_obtained * 5, med_total)) +
        (safe_divide(mphil_obtained * 5, mphil_total)) +
        (safe_divide(phd_obtained * 5, phd_total))
    )

    # Display the result
    print("\nYour calculated aggregate is:", round(aggregate, 2))

# Run the calculator
calculate_aggregate()