>>> from collections import namedtuple
>>> Car = namedtuple('Car', 'color mileage')

>>> my_car = Car('red', 3812.4)
>>> my_car.color
'red'
>>> my_car.mileage
3812.4

>>> my_car
Car(color='red' , mileage=3812.4)

# 与元组类似，命名元组的元素也不能修改
>>> my_car.color = 'blue'
AttributeError: "can't set attribute"

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