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builder.py
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builder.py
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"""Simplyfies building complex objects."""
class Director(object):
def __init__(self, builder):
self._builder = builder
def construct_car(self):
self._builder.create_new_car()
self._builder.add_model()
self._builder.add_tires()
self._builder.add_engines()
def get_car(self):
return self._builder
class Builder(object):
def __init__(self):
self.car = None
def create_new_car(self):
self.car = Car()
class SkyLarkBuilder(Builder):
def add_model(self):
self.car.model = "SkyLark"
def add_tires(self):
self.car.tires = "Regular Tires"
def add_engines(self):
self.car.engines = "Two Stroke Engines"
class Car(object):
def __init__(self):
self.model = None
self.tires = None
self.engines = None
def __str__(self):
return f"{self.model} {self.tires} {self.engines}"
builder = SkyLarkBuilder()
director = Director(builder)
director.construct_car()
car = director.get_car()
print(car)