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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.要藏也藏在洞口，待我伸手摸摸看。徐风看着他，认真地说：阳痿没那么好治的，一次不够。Differences between simple factories and factory methods: Simple factories and factory method patterns look very similar, especially specific factories in simple factories and factory methods. Simple factory, all things have been done in one place. However, the factory method creates a framework for subclasses to decide how to implement it. For example, in the factory method, the OrderPizza method creates a general framework to create pizza. The OrderPizza method relies on the factory method to create specific classes and make actual pizza. It is possible to decide what the actual products manufactured are by inheriting the factory. Simple factories do not have this flexibility.恶人谷虽然凶险，但燕某势在必行，就此别过。另一边传来青蒜的尖叫，说蜜蜂太吓人了。