class Washer():
  def wash(self):
    print('do some laundry stuff')
haier1 = Washer()
#添加属性，对象名、属性名 = 值
haier1.width = 400
haier1.height = 500

class Washer():
  def wash(self):
    print(f'洗衣机宽度为{self.width}')
    print(f'洗衣机高度为{self.height}')

haier1 = Washer()

haier1.width = 400
haier1.height = 500

haier1.wash()