泡菜不倾倒一切？

Question

我目前正在使用一个简单的机器人工作，并希望使用Pickle存储机器人的主要对象。但是，试图与最初声明的组件进行互动似乎并不起作用。存储和读取该项目的代码如下所示。应该注意的是，此对象处于工作状态：

import pickle, os

from sys import argv

from zumicreator import ZumiCreator
from zumi.zumi import Zumi
functions = {"move_inches": "z.move_inches(fParam)"}

def getZumi():
    file = open(os.getcwd() + "/Code/lib/state", "rb")
    zumiHousing = pickle.load(file)
    return zumiHousing

def main():
    if argv[1] == "create":
        
        # Create the Zumi object
        # and store it with pickle.
        
        zumiHousing = Zumi()
        file = open(os.getcwd() + "/Code/lib/state", "wb")
        pickle.dump(zumiHousing, file)

        print('Dump Successful!')
        
        # Exit since that is all we 
        # needed to do.
        quit()
        
    # ! Do NOT change ANY of the following variable names! 
    z = getZumi()
    fName = argv[1].split()[0]
    fParam = str(argv[1].split()[1:]).replace("[", "").replace("]", "").replace("'", "")

    # Runs the function with the desired arguments.
    eval(functions[fName])
    
if __name__ == '__main__':
    main()

正如您可能猜到的那样，该对象具有名为：move_inches的方法。该对象是在if块中创建的，并在main函数中引用。

当使用已读取的对象时，我会收到此错误：

Traceback (most recent call last):
  File "/home/pi/.local/lib/python3.5/site-packages/zumi/zumi.py", line 526, in __read_raw_MPU_data
    high = self.bus.read_byte_data(Device.MPU, addr)
  File "/home/pi/.local/lib/python3.5/site-packages/smbus2/smbus2.py", line 429, in read_byte_data
    self._set_address(i2c_addr, force=force)
  File "/home/pi/.local/lib/python3.5/site-packages/smbus2/smbus2.py", line 354, in _set_address
    ioctl(self.fd, I2C_SLAVE, address)
OSError: [Errno 9] Bad file descriptor

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/pi/Code/lib/translator.py", line 40, in <module>
    main()
  File "/home/pi/Code/lib/translator.py", line 37, in main
    eval(functions[fName])
  File "<string>", line 1, in <module>
  File "/home/pi/.local/lib/python3.5/site-packages/zumi/zumi.py", line 2029, in move_inches
    angle = self.read_z_angle()
  File "/home/pi/.local/lib/python3.5/site-packages/zumi/zumi.py", line 1170, in read_z_angle
    angle_list = self.update_angles()
  File "/home/pi/.local/lib/python3.5/site-packages/zumi/zumi.py", line 1088, in update_angles
    self.mpu_list = self.mpu.read_all_MPU_data()
  File "/home/pi/.local/lib/python3.5/site-packages/zumi/zumi.py", line 568, in read_all_MPU_data
    Gyro.X, Gyro.Y, Gyro.Z)
  File "/home/pi/.local/lib/python3.5/site-packages/zumi/zumi.py", line 543, in read_multiple_raw_MPU_data
    result.append(self.__read_raw_MPU_data(item))
  File "/home/pi/.local/lib/python3.5/site-packages/zumi/zumi.py", line 533, in __read_raw_MPU_data
    return self.__read_raw_MPU_data()
TypeError: __read_raw_MPU_data() missing 1 required positional argument: 'addr'

这使我相信我不能像这样存储这样的对象。

有谁知道存储对象的整个状态或防止再次调用构造函数的任何选择？

谢谢！

Answer 1

目前尚不清楚为什么您不愿重新运行Zumi（） ctor。

文档解释说，有些对象泡菜不能序列化。
打开文件描述是其中之一。

您也许可以通过取消挑选然后致电一些Zumi来恢复
重新建立（重新打开）I2C连接的函数。

或者，考虑创建一个伴随对象
具有属性的最多，
但是省略了非秘密序列化的诸如打开文件描述符。
调用zumi（）以通常的方式创建z，
并在z的属性上从同伴中复制属性。