adii1823
53 lines
1.4 KiB
Python
53 lines
1.4 KiB
Python
# oop/class.issubclass.isinstance.py
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from class_inheritance import Car, RaceCar, F1Car
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car = Car()
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racecar = RaceCar()
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f1car = F1Car()
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cars = [(car, 'car'), (racecar, 'racecar'), (f1car, 'f1car')]
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car_classes = [Car, RaceCar, F1Car]
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for car, car_name in cars:
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for class_ in car_classes:
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belongs = isinstance(car, class_)
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msg = 'is a' if belongs else 'is not a'
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print(car_name, msg, class_.__name__)
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""" Prints:
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Starting engine Engine for car Car... Wroom, wroom!
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Starting engine V8Engine for car RaceCar... Wroom, wroom!
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Starting engine ElectricEngine for car CityCar... Wroom, wroom!
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Starting engine V8Engine for car F1Car... Wroom, wroom!
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car is a Car
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car is not a RaceCar
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car is not a F1Car
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racecar is a Car
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racecar is a RaceCar
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racecar is not a F1Car
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f1car is a Car
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f1car is a RaceCar
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f1car is a F1Car
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"""
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print('-' * 60)
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for class1 in car_classes:
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for class2 in car_classes:
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is_subclass = issubclass(class1, class2)
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msg = '{0} a subclass of'.format(
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'is' if is_subclass else 'is not')
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print(class1.__name__, msg, class2.__name__)
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""" Prints:
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Car is a subclass of Car
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Car is not a subclass of RaceCar
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Car is not a subclass of F1Car
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RaceCar is a subclass of Car
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RaceCar is a subclass of RaceCar
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RaceCar is not a subclass of F1Car
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F1Car is a subclass of Car
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F1Car is a subclass of RaceCar
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F1Car is a subclass of F1Car
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"""
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