作者：李润锴         更新时间：2023-12-24 16:22          浏览：127次         点赞：0次          热度：28

class Bicycle: km = 0 def ride(self,km): self.km = km + self.km print("我骑行了"+str(self.km)+"千米") class EBicycle(Bicycle): vol = 0 def charge(self,vol): self.vol = self.vol + vol print("电量："+str(self.vol)) def ride(self,km): self.km = self.km + km self.vol = self.vol - km if self.vol < 0 : print("我只骑了",str(self.vol),"公里就没电了") else : print("我骑行了"+str(self.km)+"千米") print("电量："+str(self.vol)) b = EBicycle() b.charge(20) b.ride(5) b.ride(5) b.ride(5)