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

Print continents starting with A

I don't understand why this isn't working. For each item in the list continents, if the 0th character is A, print the item.

Edit: the index needs to be in square brackets for some reason, but I don't understand why this works. It's not a list.

continents = [
    'South America',
    'North America',
# Your code here
for item in continents: 
    if item(0) == "A":
        print("* " + item)

2 Answers

You sort of answered the question already: "the index needs to be in square brackets".

At the moment you are using parenthesis instead of square brackets, hence the error.

I figured that out, but I don't understand why it's the answer.

A string is an iterable data type, you can traverse it, eg:

for character in 'foobar':

In most languages it's just an array (list) of characters "stringed" together and as such you can access it by index.