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decorator2.py
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decorator2.py
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"""
this is going to be slightly different then previous,
Here we predefine the
"""
from abc import ABCMeta, abstractmethod
class BeverageAbstract(metaclass=ABCMeta):
@abstractmethod
def get_description(self):
NotImplementedError
@abstractmethod
def get_cost(self):
NotImplementedError
class Beverage(BeverageAbstract):
pass
class CondimentDecorator(Beverage):
beverage: Beverage
class Cappuccino(Beverage):
def __init__(self):
self.cost = 55
self.description = "Cappuccino"
def get_description(self):
return self.description
def get_cost(self):
return self.cost
class Milk(CondimentDecorator):
def __init__(self, beverage):
self.beverage = beverage
def get_description(self):
return self.beverage.get_description() + " Milk"
def get_cost(self):
return self.beverage.get_cost() + 10
class Foo:
pass
class ChocoChip(CondimentDecorator):
def __init__(self, beverage: Beverage):
self.beverage = beverage
def get_description(self):
return self.beverage.get_description() + " Chip"
def get_cost(self):
return self.beverage.get_cost() + 10
if __name__ == '__main__':
f = Foo()
ChocoChip(f)
cap = Cappuccino()
cap = ChocoChip(Milk(cap))
print(type(cap))
print(cap.get_description())
print(cap.get_cost())