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 Introducing Lists Using Lists Continental

Ali Abadi
Ali Abadi
2,885 Points

Python - String Indexing

Need help, i've used the same code on the python idol and it works without any issues. please help me with this. thanks

continents = [
    'South America',
    'North America',
check = 'A'
print("continents: ")
res = [idx for idx in continents if idx[0].lower() == check.lower()]
print("* " + str(res))

2 Answers

Steven Parker
Steven Parker
216,133 Points

This runs, but it does something other than what the challenge is asking for. To clarify, here's what the program outputs now:


  • ['Asia', 'Africa', 'Antarctica', 'Australia']

But this is what the challenge is looking for:

  • Asia
  • Africa
  • Antarctica
  • Australia

Also, while list digests are great the error message explicitly says "Make sure you use a for in loop to iterate through the countries".

check = 'A' print("continents: ") for idx in continents: if idx[0]== check: print("* " + idx)