git checkout webpython-hybrid
Make sure to install all dependencies and migrations:
```
 rake db:migrate
 bundle install
```
Create a new docker image containing the Turtle library and the i/o wrapper:
```
 cd webpython
 docker build -t IMAGE_NAME .
```
Configure your Docker host at config/docker.yml.erb. Make sure to add a websocket host, for example like this (this is probably different for you):
```
 host: tcp://localhost:2375
 ws_host: ws://localhost:2375
```
Run the CodeOcean server with rails s -p 3333
Login with admin@example.org (pw: admin) and create a new execution environment picking the newly created Docker image from the dropdown. Set the initial command to:
```
 cd /usr/lib/python3.4 && python3 webpython.py
```
Create a new exercise for the newly created execution environment with an arbritrary main file.

Implement the exercise. The code below can be used as an example to see the canvas and I/O in action:

 import turtle
 wn = turtle.Screen()
 alex = turtle.Turtle()

 # i/o test
 print("hello!")
 print("please enter your name")
 name = input()
 print("your name is", name)

 # canvas test
 alex.forward(50)
 alex.right(90)
 alex.forward(30)
 alex.right(90)
 alex.forward(30)

 wn.mainloop()