def test_application():
result = flat_tax(TaxedMoney(Money(10, 'BTC'), Money(10, 'BTC')), 1)
assert result.net == Money(10, 'BTC')
assert result.gross == Money(20, 'BTC')
result = flat_tax(Money(100, 'BTC'), Decimal('0.5'))
assert result.net == Money(100, 'BTC')
assert result.gross == Money(150, 'BTC')
with pytest.raises(TypeError):
flat_tax(1, 1)
def test_tax_from_gross():
result = flat_tax(
TaxedMoney(Money(120, 'USD'), Money(120, 'USD')),
Decimal('0.2'), keep_gross=True)
assert result.net == Money(100, 'USD')
assert result.gross == Money(120, 'USD')
result = flat_tax(Money(150, 'BTC'), Decimal('0.5'), keep_gross=True)
assert result.net == Money(100, 'BTC')
assert result.gross == Money(150, 'BTC')
def test_range():
price_range = MoneyRange(Money(10, 'BTC'), Money(20, 'BTC'))
result = flat_tax(price_range, 1)
assert result.start == TaxedMoney(Money(10, 'BTC'), Money(20, 'BTC'))
assert result.stop == TaxedMoney(Money(20, 'BTC'), Money(40, 'BTC'))
price_range = TaxedMoneyRange(
TaxedMoney(Money(10, 'BTC'), Money(10, 'BTC')),
TaxedMoney(Money(20, 'BTC'), Money(20, 'BTC')))
result = flat_tax(price_range, 1)
assert result.start == TaxedMoney(Money(10, 'BTC'), Money(20, 'BTC'))
assert result.stop == TaxedMoney(Money(20, 'BTC'), Money(40, 'BTC'))
def compute_price(net=0, gross=0, tax=0, currency='EUR', keep_gross=True):
"""Compute net, gross and tax amount
The computation can be net or gross based (gross as default)
:param net: Net price (untaxed)
:type net: int, float, decimal
:param gross: Gross price (including taxes)
:type gross: int, float, decimal
:param tax: Tax percentage (a value between 0 and 1)
:type tax: int, float, decimal
:param currency: Currency (3 character code)
:type currency: string
:param keep_gross: A boolean to force computation gross price.
Default value is True
:type keep_gross: Boolean
:return: TaxedMoney from `prices` python package
:rtype: TaxedMoney
Example:
# compute net from gross
>>> price = compute_price(gross=100, tax=0.2, currency='EUR')
>>> price
>>> TaxedMoney(net=Money('83.33', 'EUR'), gross=Money('100.00', 'EUR'))
>>> price.tax
>>> Money('16.67', 'EUR')
# compute gross from net
>>> price = compute_price(net=83.33, tax=0.2, keep_gross=False)
>>> price
>>> TaxedMoney(net=Money('83.33', 'EUR'), gross=Money('100.00', 'EUR'))
>>> price.tax
>>> Money('16.67', 'EUR')
"""
if net != gross:
if keep_gross:
net = gross
else:
gross = net
tax = compute_tax(tax)
return flat_tax(TaxedMoney(
Money(D(net), currency).quantize(),
Money(D(gross), currency).quantize()),
tax,
keep_gross=keep_gross)
def tax(base, keep_gross=False):
return flat_tax(base, final_tax_rate, keep_gross=keep_gross)
