Python逻辑门的继承层次结构代码实例

以下是Python逻辑门的继承层次结构代码实例：

class LogicGate:
    def __init__(self, n):
        self.label = n
        self.output = None
    
    def getLabel(self):
        return self.label
    
    def getOutput(self):
        self.output = self.performGateLogic()
        return self.output

class BinaryGate(LogicGate):
    def __init__(self, n):
        LogicGate.__init__(self, n)
        self.pinA = None
        self.pinB = None
    
    def getPinA(self):
        if self.pinA == None:
            return int(input("Enter Pin A input for gate " + self.getLabel() + "-->"))
        else:
            return self.pinA.getFrom().getOutput()
        
    def getPinB(self):
        if self.pinB == None:
            return int(input("Enter Pin B input for gate " + self.getLabel() + "-->"))
        else:
            return self.pinB.getFrom().getOutput()
        
    def setNextPin(self, source):
        if self.pinA == None:
            self.pinA = source
        else:
            if self.pinB == None:
                self.pinB = source
            else:
                raise RuntimeError("Error: NO EMPTY PINS")

class UnaryGate(LogicGate):
    def __init__(self, n):
        LogicGate.__init__(self, n)
        self.pin = None
    
    def getPin(self):
        if self.pin == None:
            return int(input("Enter Pin input for gate " + self.getLabel() + "-->"))
        else:
            return self.pin.getFrom().getOutput()
        
    def setNextPin(self, source):
        if self.pin == None:
            self.pin = source
        else:
            raise RuntimeError("Error: NO EMPTY PINS")

class AndGate(BinaryGate):
    def __init__(self, n):
        BinaryGate.__init__(self, n)
    
    def performGateLogic(self):
        a = self.getPinA()
        b = self.getPinB()
        return a and b

class OrGate(BinaryGate):
    def __init__(self, n):
        BinaryGate.__init__(self, n)
    
    def performGateLogic(self):
        a = self.getPinA()
        b = self.getPinB()
        return a or b

class NotGate(UnaryGate):
    def __init__(self, n):
        UnaryGate.__init__(self, n)
    
    def performGateLogic(self):
        pin = self.getPin()
        if pin == 0:
            return 1
        else:
            return 0

class Connector:
    def __init__(self, fgate, tgate):
        self.fromgate = fgate
        self.togate = tgate
        
        tgate.setNextPin(self)
    
    def getFrom(self):
        return self.fromgate
    
    def getTo(self):
        return self.togate

# 测试代码
g1 = AndGate("G1")
g2 = AndGate("G2")
g3 = OrGate("G3")
g4 = NotGate("G4")
c1 = Connector(g1, g3)
c2 = Connector(g2, g3)
c3 = Connector(g3, g4)
print(g4.getOutput())

输出：

Enter Pin A input for gate G1-->0
Enter Pin B input for gate G1-->1
Enter Pin A input for gate G2-->1
Enter Pin B input for gate G2-->0
1