Not able to work with motors

[mikulatomas]

Hi, testing on latest ev3dev and python 3, getting this error

`>>> from ev3.lego import *

d = MediumMotor()
Traceback (most recent call last):
File "", line 1, in
File "/home/robot/.virtualenvs/ev3_py34/lib/python3.4/site-packages/python_ev3-0.0.3.0-py3.4.egg/ev3/lego.py", line 217, in init
File "/home/robot/.virtualenvs/ev3_py34/lib/python3.4/site-packages/python_ev3-0.0.3.0-py3.4.egg/ev3/ev3dev.py", line 330, in init
TypeError: 'NoneType' object is not subscriptable`

I am able to see motors in the folder /sys/class/tacho-motor/motor*/

[ValorNaram]

run cd /sys/class/tacho-motor and dir and paste the output.
If you don't see motor0 and so on, then check the wires on the motor.
And try these steps:

1. shutdown your robot
2. disconnect all wires from your brick
3. boot ev3dev
4. if boot has finish, then connect the motors using the wires on your brick and run cd /sys/class/tacho-motor and dir again and paste the output too, if an output appears.

[liam-b]

Are you sure you've downloaded and imported lang-python correctly?
Also this should work:

import ev3dev.ev3 as ev3
myMotor = ev3.LargeMotor('outA') # ports are from 'outA' to 'outD'
# do things with myMotor

[dlech]

@liam-b, I think you have "python-ev3" (this repository) confused with "ev3dev-lang-python" (https://github.com/rhempel/ev3dev-lang-python)