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9-9 Battery Upgrade: In the last version of electric_car. Py in this section, add a method named upgrade_battery () to the Battery class. This method checks the battery capacity and sets it to 85 if it is not 85. Create an electric car with the default battery capacity, call the method get_range (), then upgrade the battery, and call get_range () again. You will see that the range of this car has increased.　　风云不测，继父遭人陷害入狱，母亲一病不起。阿敏要在短时间内筹钱，只有下海作舞女。在领班Cat妈（玛利亚 饰）的代领下，阿敏进入全港最红的舞厅，并再次巧遇阿红。辛酸的舞女生活，阿敏在阿红的代领下慢慢地成长起来。二人面临各种艰难险阻，相互扶持照顾，结下生死情谊。眼看父亲即将出狱，生活渐渐有了希望，1988年股市的崩颓却又如晴天霹雳般摧毁了一切。阿红多年买股票的钱全部亏空，自杀未遂。　　姜洪武走了出来。十五年的牢狱生活让他忘记了外面世界的阳光。当那一米阳光照射在姜洪武脸上的时候，他并不知道其实迎接他的不是光明，而是更加无尽的黑夜。Li Shanglong rummaged through his wallet: "No change." This classmate's face is a little upset. Li Shanglong said: "Otherwise, I'll buy lunch." The classmate's face spread out and said, "Good."尹旭呵呵笑道：这还得多谢庄哥你的指点，否则纵然练上十年八载，也还是老样子。Shanxi Province