Adapter pattern

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"""! @brief Design patterns Exampe from the book  - Design Patterns: Elements of Reusable Object-Oriented Software - The GoF """
#   
#  ===== Adapter Design Pattern Exampe (Also known as Wrapper) ===== 
#
# @author : afondiel | 12/03/2022
#

"""! @brief Design patterns Exampe from the book - Design Patterns: Elements of Reusable Object-Oriented Software - The GoF """ # # ===== Adapter Design Pattern Exampe (Also known as Wrapper) ===== # # @author : afondiel | 12/03/2022 #

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class EuropeanSocketInterface: 
    def voltage(self): pass 
    def live(self): pass 
    def neutral(self): pass 
    def earth(self): pass 

class EuropeanSocketInterface: def voltage(self): pass def live(self): pass def neutral(self): pass def earth(self): pass

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# Adaptee 
class Socket(EuropeanSocketInterface): 
    def voltage(self): 
        return 230 
    
    def live(self): 
        return 1 
    
    def neutral(self): 
        return -1 
    
    def earth(self): return 0

# Adaptee class Socket(EuropeanSocketInterface): def voltage(self): return 230 def live(self): return 1 def neutral(self): return -1 def earth(self): return 0

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class USASocketInterface:
    def voltage(self): pass
    def live(self): pass
    def neutral(self): pass

class USASocketInterface: def voltage(self): pass def live(self): pass def neutral(self): pass

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# The Adapter
class Adapter(USASocketInterface):
    __socket = None
    def __init__(self, socket)r:
        self.__socket = socket

    def voltage(self):
        return 110

    def live(self):
        return self.__socket.live()

    def neutral(self):
        return self.__socket.neutral()

# The Adapter class Adapter(USASocketInterface): __socket = None def __init__(self, socket)r: self.__socket = socket def voltage(self): return 110 def live(self): return self.__socket.live() def neutral(self): return self.__socket.neutral()

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# Client
class ElectricKettle:
    __power = None

    def __init__(self, power):
        self.__power = power

    def boil(self):
        if self.__power.voltage() > 110:
            print ("Kettle on fire!")
        else:
            if self.__power.live() == 1 and self.__power.neutral() == -1:
                print ("Coffee time!")
            else:
                print ("No power.")

# Client class ElectricKettle: __power = None def __init__(self, power): self.__power = power def boil(self): if self.__power.voltage() > 110: print ("Kettle on fire!") else: if self.__power.live() == 1 and self.__power.neutral() == -1: print ("Coffee time!") else: print ("No power.")

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def main():
    # Plug in
    socket = Socket()
    adapter = Adapter(socket)
    kettle = ElectricKettle(adapter)

    # Make coffee
    kettle.boil()

    return 0

def main(): # Plug in socket = Socket() adapter = Adapter(socket) kettle = ElectricKettle(adapter) # Make coffee kettle.boil() return 0

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if __name__ == "__main__":
    print("==== main function =====")
    main()

if __name__ == "__main__": print("==== main function =====") main()