def __rtruediv__(self, other: Union['Price', float, int]):
"""Divides two PriceType objects together.
Arguments:
other: Union[Price, float, int]
The object that is the left argument of the
addition operation.
Raises:
IncompatibleTradingPairException:
If (other : Price) and the pairs do not equal each other.
InvalidNonNumericQuantity:
If not (other : Union[Price, Number]).
"""
price = None
if isinstance(other, float) or isinstance(other, int):
price = Price(other / self.rate, self.pair.quote / self.pair.base)
elif isinstance(other, Quantity):
raise IncompatiblePriceQuantityOperation(self, other)
elif not isinstance(other, Number):
raise InvalidNonNumericQuantity(other)
return price
def __mul__(self, other: Union['Quantity', float, int]) -> 'Quantity':
if isinstance(other, Price):
if other.pair.quote != self.instrument:
raise IncompatiblePriceQuantityOperation(
other.pair.quote, self.instrument)
return Quantity(other.pair.base, other.rate * self.size,
self.path_id)
return Quantity._math_operation(self, other, operator.mul)
def __truediv__(self, other: Union['Quantity', 'Instrument', float, int]) -> Union['Quantity', 'Price']:
if isinstance(other, Price):
if other.pair.base != self.instrument:
raise IncompatiblePriceQuantityOperation(other.pair.quote, self.instrument)
return Quantity(other.pair.quote, self.size / other.rate, self.path_id)
elif other.__class__.__name__ == "Instrument":
return Price(self.size, self.instrument / other)
elif isinstance(other, Quantity):
if self.instrument != other.instrument:
return Price(self.size / other.size, self.instrument / other.instrument)
return Quantity._math_operation(self, other, operator.truediv)
def __mul__(self, other: Union['Price', 'Quantity', float, int]):
"""Multiplies two PriceType objects together.
Arguments:
other: Union[Price, float, int]
The object that is the right argument of the
operation.
Raises:
IncompatibleTradingPairException:
If (other : Price) and the pairs do not equal each other.
InvalidNonNumericQuantity:
If not (other : Union[Price, Number]).
"""
price = None
if isinstance(other, Price):
rate = self.rate * other.rate
pair = self.pair or other.pair
if self.pair != other.pair:
raise IncompatibleTradingPairOperation(self.pair, other.pair)
price = Price(rate, pair)
elif isinstance(other, float) or isinstance(other, int):
price = Price(self.rate * other, self.pair)
elif isinstance(other, Quantity):
if other.instrument != self.pair.quote:
raise IncompatiblePriceQuantityOperation(
self.pair.quote, other.instrument)
return Quantity(self.pair.base, self.rate * other.size,
other.path_id)
elif not isinstance(other, Number):
raise InvalidNonNumericQuantity(other)
return price