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发表于 2020-3-29 08:07:22
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显示全部楼层
第 16 行应该是赋值 = 不是判断 ==
代码帮你改好了:
- class Battery():
- def __init__(self, battery_size=70):
- self.battery_size = battery_size
- def describe_battery(self):
- print("This car has a " + str(self.battery_size) + "-kWh battery.")
- def get_range(self):
- if self.battery_size == 70:
- range = 240
- elif self.battery_size == 85:
- range = 270
- message = "This car can go approximately " + str(range)
- message += " miles on a full charge."
- print(message)
- def upgrade_battery(self):
- if self.battery_size != 85:
- self.battery_size = 85
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