为 EB 账单计算器编写程序

# function to calculate electricity bill based on unit consumption
def eb(unit):
    # first 100 units are free
    if unit <= 100:
        cost = 0.00
    # for 101–200 units, charge ₹2.50 per unit above 100
    elif unit <= 200:
        cost = (unit - 100) * 2.50
    # for 201–300 units, add ₹3.00 per unit above 200
    elif unit <= 300:
        cost = 100 * 2.5 + (unit - 200) * 3.00
    # for 301–400 units, add ₹4.50 per unit above 300
    elif unit <= 400:
        cost = 100 * 2.5 + 100 * 3 + (unit - 300) * 4.50
    # for units above 400, add ₹6.00 per unit above 400
    else:
        cost = 100 * 2.5 + 100 * 3 + 100 * 4.5 + (unit - 400) * 6.00
    # return the total calculated cost
    return cost

# input the total units consumed
unit = int(input("enter the unit: "))

# call the `eb` function to calculate the electricity bill
eb_bill = eb(unit)

# display the calculated electricity bill amount
print("electricity bill amount:", eb_bill)

Enter the unit:345
Electricity bill amount: 752.5