We will be using Python 3 in this course.
When creating a new notebook on IPython/Jupyter server, make sure that you choose Python 3 in the dropdown menu that appears when you click New.
If you find yourself asking questions like these:
I found a typo in one of the lessons/notebooks/assignments. Can you fix it, please?
You are wrong! 1 + 1 is 2 not 3 as you say in one of the lessons/notebooks/assignments.
One of the code cells in XXXXX.ipynb does not work/does not produce the same output. I know how to fix it. You can fix it by doing XXXXX.
Please consider sending a pull request rather than contacting the instructional staff. If you don't know how to submit a pull request, we've written a guide on how to do a pull request.