Add code for Interacting With Python tutorial update

[martin-martin]

Where to put new files:

• New files should go into a top-level subfolder, named after the article slug. For example: my-awesome-article

How to merge your changes:

1. Make sure the CI code style tests all pass (+ run the automatic code formatter if necessary).
2. Find an RP Team member on Slack and ask them to review & approve your PR.
3. Once the PR has one positive ("approved") review, GitHub lets you merge the PR.
4. 🎉

[stephengruppetta]

@martin-martin @gahjelle, nothing much to review in the materials repo. I confirm all three lines are fine (!!)
I know the policy is to always have downloadable material with tutorials, but could such a brief three-liner do more harm than good?

[martin-martin]

@stephengruppetta I don't think it'll do more harm than good. I think it probably doesn't do much good from a learning perspective either, but if it makes a reader sign up, that's good.

Providing materials that go above and beyond content that we already have through making the tutorial hasn't seemed like a worthwhile time investment from a company perspective so far.