Python类属性及其方法参数类型的一些要点

    class Car():
    """一次模拟汽车的简单尝试"""
    
    def __init__(self, make, model, year=2016):
        """初始化描述汽车点的属性"""
        self.make = make
        self.model = model
        self.year = year
        self.odometer_reading = 0
    
    def get_descriptive_name(self，mileage):
        """返回整洁的描述性信息"""
        long_name =self.make + " " + str(self.year) + ' ' + self.model + '  ' +str(self.odometer_reading) + ' ' + srt(mileage)
        return long_name.title()