15、MicroPython编程实战：循环与JSON数据处理

MicroPython编程实战：循环与JSON数据处理

1. Python类的内置属性与伪私有变量

在Python中，我们可以使用内置属性来获取类的更多信息。以 PickupTruck 类为例，其 __dict__ 属性展示了类的各种属性和方法：

PickupTruck.__dict__: {'__module__': 'pickup_truck', '__doc__': 'This is a 
pickup truck that has:\n    axles = 2,\n    doors = 2,\n    max occupants 
= 3\n    The maximum payload is set on instantiation.\n    ', 'occupants': 
0, 'payload': 0, 'max_payload': 0, ' _PickupTruck__max_occupants': 3, 
'__init__': <function PickupTruck.__init__ at 0x1018a1488>, 'add_occupant': 
<function PickupTruck.add_occupant at 0x1018a17b8>, 'add_payload': <function 
PickupTruck.add_payload at 0x1018a1840>, 'remove_payload': <function 
PickupTruck.remove_payload at