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Python Introducing Lists Using Lists Continental

Posted by Aizah Sadiq
Aizah Sadiq
2,435 Points

I don't know how I should go about this question

The question is asking to only print continents with the letter A, how should I go about this

continents.py 
continents = [
    'Asia',
    'South America',
    'North America',
    'Africa',
    'Europe',
    'Antarctica',
    'Australia',
]
# Your code here
for continent in continents:
    print("* " + continent )
Basel Kanaan
Basel Kanaan
4,458 Points
Basel Kanaan
Basel Kanaan
4,458 Points

hi bro you need to add if statement to check if A in continent before the print line

10 Answers

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

As Basel suggested, an "if" statement to control when to print would do it. For the conditional test, you can isolate the first character of the "continent" using indexing (square brackets) and then compare it to the letter "A".

Update: You won't need brackets around the 'A'. The brackets would be used for indexing "continent", to select the first character. You may want to revisit the indexing video from the previous stage.

Aizah Sadiq
Aizah Sadiq
2,435 Points
Aizah Sadiq
Aizah Sadiq
2,435 Points

I tried that and I received an invalid syntax on the equal sign

continents = [
    'Asia',
    'South America',
    'North America',
    'Africa',
    'Europe',
    'Antarctica',
    'Australia',
]
# Your code here
for continent in continents:
    if continent[0] = 'A':
        print("* " + continent)
Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

One "=" is an assignment operator, you want a comparison ("==") here.

Aizah Sadiq
Aizah Sadiq
2,435 Points
Aizah Sadiq
Aizah Sadiq
2,435 Points

Would this work if continent = ['A']:

Aizah Sadiq
Aizah Sadiq
2,435 Points
Aizah Sadiq
Aizah Sadiq
2,435 Points

So hard brackets around continent

Aizah Sadiq
Aizah Sadiq
2,435 Points
Aizah Sadiq
Aizah Sadiq
2,435 Points

I reviewed the video and I still don't seem to understand how to do it, I was wondering if you could explain to me how to solve this challenge

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

In the video examples, where are brackets placed to do indexing? And what goes inside the brackets?

Aizah Sadiq
Aizah Sadiq
2,435 Points
Aizah Sadiq
Aizah Sadiq
2,435 Points

You would put the brackets after continents, and the number from the zero based indexing

Aizah Sadiq
Aizah Sadiq
2,435 Points
Aizah Sadiq
Aizah Sadiq
2,435 Points

would this work if I put this above the code from the first step if continents[0] = A:

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

You can find out quicker by trying it in the challenge! But you want to use the indexing on "continent" (singular), and it looks like you need to put the quotes back around the "A".

Aizah Sadiq
Aizah Sadiq
2,435 Points
Aizah Sadiq
Aizah Sadiq
2,435 Points

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

Aizah Sadiq
Aizah Sadiq
2,435 Points
Aizah Sadiq
Aizah Sadiq
2,435 Points 
continents = [
    'Asia',
    'South America',
    'North America',
    'Africa',
    'Europe',
    'Antarctica',
    'Australia',
]
# Your code here

for continent in continents:
    if continent[0] = 'A' 
    print("* " + continent)
Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

Getting closer, you need a colon (:) at the end if the "if" line, and the "print" line needs to be indented one more level.

Aizah Sadiq
Aizah Sadiq
2,435 Points
Aizah Sadiq
Aizah Sadiq
2,435 Points

ok thank you so much for your help

Jerry Avila
Jerry Avila
5,523 Points

Falah Sadiq This really helped was stuck on this for 4 hours. I watched the indexing video 4X's but missed this I saw it used in a string but didn't know it could work with a list. Steven Parker thanks for walking through this.