27 lines
827 B
Python
27 lines
827 B
Python
from decimal import Decimal as D
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from collections import namedtuple
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Item = namedtuple('Item', 'price, quant')
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items = dict( hamburger=Item(D('5.50'), D('4000000000000000')),
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milkshake=Item(D('2.86'), D('2')) )
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tax_rate = D('0.0765')
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fmt = "%-10s %8s %18s %22s"
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print(fmt % tuple('Item Price Quantity Extension'.upper().split()))
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total_before_tax = 0
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for item, (price, quant) in sorted(items.items()):
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ext = price * quant
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print(fmt % (item, price, quant, ext))
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total_before_tax += ext
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print(fmt % ('', '', '', '--------------------'))
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print(fmt % ('', '', 'subtotal', total_before_tax))
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tax = (tax_rate * total_before_tax).quantize(D('0.00'))
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print(fmt % ('', '', 'Tax', tax))
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total = total_before_tax + tax
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print(fmt % ('', '', '', '--------------------'))
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print(fmt % ('', '', 'Total', total))
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