Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Python Functional Python Functional Workhorses Chaining Functions

The mystery of Book 4...

So I wanted to do a bit of research, since I noticed that there were still 7 books printed when the books were filtered with has_roland.

Turns out that 'Wizard And Glass' is the fourth book in The Dark Tower series!

Kenneth Love, you didn't forget to add the fourth book, you just forgot to add the subtitle of (The Dark Tower, Book 5)

1 Answer

Kenneth Love
STAFF
Kenneth Love
Treehouse Guest Teacher

Ha! That'll teach me to not triple-check my source files. I thought I had made sure I had all of them (my favorite of his series...at least until about the halfway point) so I was surprised to not see them when I shot the video. Thanks for looking into it!