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本帖最后由 Frank.Lin 于 2018-3-2 16:34 编辑
py3里面如下代码,求老师解惑:- class Vehicle:
- def __init__(self,speed):
- self.speed=speed
- def drive(self,distance):
- print('nees %f hour(s)'%(distance/self.speed)
- class Bike(Vehicle):
- pass
-
- class Car(Vehicle):
- def __init__(self,speed,fuel):
- vehicle._init_(self,speed)
- self.fuel=fuel
- def drive(self,distance)
- Vehicle.drive(self,distance)
- print('need %f fuels'%(distance*self.fuel)
- b=Bike(15.0)
- c=Car(80.0,0.012)
- b.drive(100.0)
- c.drive(100.0)
-
复制代码 系统报错,invalid syntax,再class Bike(vehicle)那里。请教下老师及各位同学,到底是什么原因? |
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