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Python Introducing Lists Using Lists Continental

Shiming Zhang
Shiming Zhang
829 Points
Posted by Shiming Zhang
Shiming Zhang
829 Points

How can I just print the elements begin with an "A"?

I know that I need to use indexing, but I still don't know how to do it.

continents.py 
continents = [
    'Asia',
    'South America',
    'North America',
    'Africa',
    'Europe',
    'Antarctica',
    'Australia',
]

As = continents

del As[1]
del As[1]
del As[2]
for A in As:
    print("*", A)

2 Answers

Cameron S
Cameron S
20,537 Points
Cameron S
Cameron S
20,537 Points

You can do so like this: 

continents = [
    "Asia",
    "South America",
    "North America",
    "Africa",
    "Europe",
    "Antarctica",
    "Australia",
]

for obj in continents:
    if obj[0] == "A":
        print(obj)

When you are looping through the list of continents, obj[0] is the first letter (index) of each continent.

Steven Parker
Steven Parker
231,198 Points
Steven Parker
Steven Parker
231,198 Points

Don't modify the list itself! Instead, go back to the code you had from task 1 with the loop that printed out all the items. Then add a conditional ("if") statement to control the "print".

In the conditional expression you can compare the first letter of the name (using indexing) to see if it is equal to "A".

Shiming Zhang
Shiming Zhang
829 Points
Shiming Zhang
Shiming Zhang
829 Points

I know what you mean, but unfortunately, I still don't what to do. : ( Someone else has helped me with this problem. Thanks a lot. : )

Steven Parker
Steven Parker
231,198 Points
Steven Parker
Steven Parker
231,198 Points

I was trying to help you solve it yourself rather than just doing the solution for you. :see_no_evil: