AttributeError: 'CartpoleRobot' object has no attribute 'getSelf' about deepbots-tutorials

[tsampazk]

Hello @ahforoughi, thank you for bringing this issue to our attention!

The tutorial targets the newest version of deepbots that is currently not released and changes in that version cause this issue.

I will add a notice in the tutorial until the new release.

For now you can install the dev version of deepbots from here with the following command:
pip install -i https://test.pypi.org/simple/ deepbots
Note that the version is in development and some features such as the wrappers are not functioning properly.

Otherwise, you can make the following changes in your __init__ method to fix the problem using the current deepbots release,
i marked the changed lines in the comments:

        self.robot = self.supervisor.getSelf()  # Fix
        self.positionSensor = self.supervisor.getDevice("polePosSensor")  # Fix
        self.positionSensor.enable(self.timestep)

        self.poleEndpoint = self.supervisor.getFromDef("POLE_ENDPOINT")  # Fix
        self.wheels = []
        for wheelName in ['wheel1', 'wheel2', 'wheel3', 'wheel4']:
            wheel = self.supervisor.getDevice(wheelName)  # Fix

Let me know if it works for you and feel free to ask any additional questions! 😄

[cwjwudi]

Hi,after I use your way to fix the problem,there is still a problem
Traceback (most recent call last): File "robotSupervisorController.py", line 96, in <module> env = CartpoleRobot() File "robotSupervisorController.py", line 23, in __init__ self.positionSensor.enable(self.timestep) AttributeError: 'NoneType' object has no attribute 'enable'

[eakirtas]

What's the name of your poleEndpont? The name defined in simulator for the endpoint should be the same as in your code

self.poleEndpoint = self.supervisor.getFromDef("<name>")

[cwjwudi]

What's the name of your poleEndpont? The name defined in simulator for the endpoint should be the same as in your code

self.poleEndpoint = self.supervisor.getFromDef("<name>")

Hi, I've fix the problem, in my environment, the getDevicedid not work properly. Finally, I found that change the self.positionSensor = self.getDevice('polePosSensor') into self.positionSensor = self.getPositionSensor('polePosSensor') and wheel = self.getDevice(wheelName) into wheel = self.getMotor(wheelName).
My environment is Ubuntu 18.04 ,Python 3.7.10 , Webots R2021a.