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"""

Provide an interface for creating families of related or dependent

objects without specifying their concrete classes.

"""

from abc import ABCMeta, abstractmethod

class CarFactory(metaclass=ABCMeta):

@abstractmethod

def build_parts(self):

pass

@abstractmethod

def build_car(self):

pass

class SedanCarFactory(CarFactory):

def build_parts(self):

return SedanCarPartsFactory()

def build_car(self):

return SedanCarAssembleFactory()

class SUVCarFactory(CarFactory):

def build_parts(self):

return SUVCarPartsFactory()

def build_car(self):

return SUVCarAssembleFactory()

class CarPartsFactory(metaclass=ABCMeta):

"""

Declare an interface for a type of car parts.

"""

@abstractmethod

def build(self):

pass

class SedanCarPartsFactory(CarPartsFactory):

def build(self):

print("Sedan car parts are built")

def __str__(self):

return '<Sedan car parts>'

class SUVCarPartsFactory(CarPartsFactory):

def build(self):

print("SUV Car parts are built")

def __str__(self):

return '<SUV car parts>'

class CarAssembleFactory(metaclass=ABCMeta):

"""

Declare an interface for a type of cars.

"""

@abstractmethod

def assemble(self):

pass

class SedanCarAssembleFactory(CarAssembleFactory):

def assemble(self, parts):

print(f"Sedan car is assembled here using {parts}")

class SUVCarAssembleFactory(CarAssembleFactory):

def assemble(self, parts):

print(f"SUV car is assembled here using {parts}")

if __name__ == "__main__":

for factory in (SedanCarFactory(), SUVCarFactory()):

car_parts = factory.build_parts()

car_parts.build()

car_builder = factory.build_car()

car_builder.assemble(car_parts)