Graded Homework 3

**Grade: 4.2/5**

Excellent work, Sophie! Sadly, there seems to be a minor bug in your code. I pointed it out below, so you should check it out. Other comments I had:
- Yay error catching! Kudos to you for picking up on it. If you want to learn more about it, you should look up "Python raise exception". I have some examples of what they look like in the context of this homework on my [gene_finder] (https://github.com/abekim/softdes/blob/master/homework/hw3/gene_finder.py), so feel free to check it out :-)
- I made a comment about dictionaries and their structure. I think you have a better understanding of it now that you've been formally introduced to them, but feel free to reach out with any questions.

Once you've read the comments (both on the PR and under files changed), make a comment to the pull request or send me/Diana an email, letting us know that you've checked them out. Afterwards, close the PR (and optionally delete the graded branch)

#### REMEMBER NOT TO MERGE THESE PRs!