Python MotorGroup error

Programming Support
1

I have team getting this no such attribute error. See image below. Anyone have any ideas. They get it with the brain attached as well.

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2

don’t do v.MotorGroup, just use MotorGroup, it’s not part of the vex module as such

MotorGroup, SmartDrive and DriveTrain are handled in a different way.

what’s with all the use of “v.” anyway ? It’s not really necessary, assume you did

import vex as v

or something.

4 Likes
3

Thank you for your reply - will have the team try your fixes.

4

Hi, I am the creator of the code.

The complete code:

import vex as v

brain = v.Brain()

controller = v.Controller()


# Motor definitions
motor_left = v.Motor(v.Ports.PORT19)
motor_left_front = v.Motor(v.Ports.PORT1)

motor_right = v.Motor(v.Ports.PORT3)
motor_right_front = v.Motor(v.Ports.PORT20)

# left_motors = v.MotorGroup(motor_left, motor_left_front)
right_motors = v.MotorGroup(motor_right, motor_right_front) # it raises the error at this line

Thank you for the response.

5

So just to clarify, despite what the vex stubs would suggest, MotorGroup is really a standalone module. The Python VM we run on the brain actually does all the importing for you, the only reason we have

from vex import *

at the beginning of the vex python project files is to keep the linter/language server happy and indicate errors before downloading.

2 Likes
6

Thank you very much. I will try this and it makes sense to me.