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 Python Collections (2016, retired 2019) Lists Removing items from a list

Posted by Ewerton Luna
.a{fill-rule:evenodd;}techdegree seal-36
Ewerton Luna
Full Stack JavaScript Techdegree Graduate 24,031 Points

I tried this to solve the messy_list challenge, but I don't know why it doesn't work.

I ran this code on PyCharm and it worked just fine the way the challenge asked me. Why isn't it working on Treehouse?

lists.py 
messy_list = ["a", 2, 3, 1, False, [1, 2, 3]]

# Your code goes below here
messy_list.insert(0, messy_list.pop(3))
Ewerton Luna
.a{fill-rule:evenodd;}techdegree seal-36
Ewerton Luna
Full Stack JavaScript Techdegree Graduate 24,031 Points

I also tried solving it in two steps, but I keep getting this message: Bummer: Oh no! What happened to messy_list? Am I missing something?

messy_list = ["a", 2, 3, 1, False, [1, 2, 3]]

Your code goes below here

one = messy_list.pop(3) messy_list.insert(0, one)