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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.Using proxy mode, the function can be divided more clearly, which is helpful for later maintenance!故事讲述了一群热爱冰球的运动少年在冰雪赛场上奋勇拼搏的蜕变成长故事，不仅呈现了激情四射的逐梦热情，更传递了百折不挠的竞技精神。金永勋是一位外表英俊，却只能靠打工过日子的穷小子，在电视台的诱惑礼聘下，隐瞒了自己的真实身份，假装成一名百万富翁上了电视和八名女孩进行了约会。电视台最后会告知女孩们他的真实身份，只要是以真心爱着修修，不因他的贫穷而抛弃他，便能获得高额的百万奖金。在第四季的首播集中，疾病大流行已延烧数月，剧集将透过尚恩墨非的观点，阐述全球医务人员正面对的挫败感，令人喘不过气的不确定性、危险和失败。在访问大屠杀纪念馆时，摄影师发现自己被当地妇女吸引了。 但是，他们的浪漫激起了人们对共同过去的痛苦回忆。When we have added a series of validation rules to the validator object, we will call the validator.start () method to start the validation. If validator.start () returns an errorMsg string as the return value, indicating that the validation failed, the registerForm.onsubmit method is required to return false to prevent form submission. Let's take a look at the initialization code as follows: