068 python是否支持多继承，举例说明

1. python是否支持多继承，请举例说明

支持多继承

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class Calculator:     def calculate(self, expression):         return eval(expression)   class MyPrint:     def print(self, msg):         print('msg:', msg)   class MyCalculator1(Calculator, MyPrint):     pass   my1 = MyCalculator1() v = my1.calculate("1 + 3 * 6") my1.print(v)

　　

2. 如果python类的多个父类存在相同的成员，按着什么规则处理

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class Calculator:     def calculate(self, expression):         self.value = eval(expression)         return self.value       def printResult(self):         print('计算结果:{}'.format(self.value))   class MyPrint:     def print(self, msg):         print('msg:', msg)       def printResult(self):         print('result:{}'.format(self.value))   class MyCalculator1(Calculator, MyPrint):     pass   class MyCalculator2(MyPrint, Calculator):     pass   my1 = MyCalculator1() v = my1.calculate("1 + 3 * 6") my1.print(v) my1.printResult()   my2 = MyCalculator2() v = my2.calculate("1 + 3 * 6") my2.print(v) my2.printResult()

 

msg: 19
计算结果:19
msg: 19
result:19

 

如果多个父类存在冲突的成员，那么会使用最先遇到的成员（按照继承类的先后顺序）