aaronlaw / prices

Python price handling for humans

Prices: Python price handling for humans

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from prices import Price, PriceRange, LinearTax
p = Price('1.99')
p += Price(50)
p += LinearTax('0.23', '23% VAT')
print p.quantize('0.01').gross
# Decimal('63.95')
pr = PriceRange(Price(50), Price(100))
print p in pr
# True

While protecting you from all sorts of mistakes:

Price(10, currency='USD') < Price(15, currency='GBP')
# ValueError: Cannot compare prices in 'USD' and 'GBP'

Price(5, currency='BTC') + Price(7, currency='INR')
# ValueError: Cannot add price in 'BTC' to 'INR'

And being helpful:

from prices import Price, LinearTax, inspect_price
p = Price('1.99')
p += Price(50)
p += LinearTax('0.23', '23% VAT')
print inspect_price(p)
# "Price('1.99', currency=None) + Price('50', currency=None) + LinearTax('0.23', name='23% VAT')"