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 Introducing Lists Using Lists Iteration

Posted by Daniel Yoo
Daniel Yoo
1,779 Points

Why doesn't print function allow commas instead of plus sign?

In the code:

print("Books:") for book in books: print("* "+book)

Why can't I write instead print("* ", book) for the last line? It gives me an error from the challenge on the next page. Thanks.

1 Answer

Steven Parker
Steven Parker
231,271 Points
Steven Parker
Steven Parker
231,271 Points

I'm not sure which challenge you are doing, but one difference when giving "print" multiple arguments is that it adds a space between them. So where you need a space beside the asterisk when concatenating, having one there when using two arguments would create too much space between the items.