Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

Python Python Basics (Retired) Things That Count Things That Count

days_alive.py, I tried task 3 about 20 different ways and it won't work. I don't know if I am using the {} correctly.

I do not know how to insert a variable into a string using the {}.

2 Answers


Check out the Python documentation for some examples on how to use the string formatting methods!

https://docs.python.org/2/library/string.html#format-examples (For Python 2.7)

https://docs.python.org/3/library/string.html#format-examples (For Python 3.4 - the one Treehouse uses!)

Thank you for pointing me in the direction of that documentation. I will need to come back to this because that is a lot to learn in one sitting.

Hi Sam,

Here is the video that covers String Formatting.


Thank you, that worked. I just needed to watch the video and follow the procedure.