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Python Python Collections (2016, retired 2019) Slices Slice Functions

Posted by Abubakar Gataev
Abubakar Gataev
2,226 Points

SLICE FUNCTIONS HEELP

Great work!

OK, this second one should be pretty similar to the first. Make a new function named first_and_last_4. It'll accept a single iterable but, this time, it'll return the first four and last four items as a single value. The first one is right, the second is wrong please help.

slices.py 
def first_4(favotings):
    return favotings[0:4]

def first_and_last_4(ABUISBEEST):
    return ABUISBEEST[0:4]
    return ABUISBEEST[6:100]
Jigar Gor
Jigar Gor
Courses Plus Student 1,568 Points
Jigar Gor
Jigar Gor
Courses Plus Student 1,568 Points

Once the return keyword is encountered in the function, the function exits; therefore, you are only returning the first 4 instead of the last 4 - your code never reaches the line: return ABUISBEEST[6:100]. Also, you may want to reconsider the numbers used in beginning and end for the last 4. If you don't know the length of the list you're passing it may be easier to count from -1 as the starting index of the last element.

1 Answer

Abubakar Gataev
Abubakar Gataev
2,226 Points
Abubakar Gataev
Abubakar Gataev
2,226 Points

What do I have to do to reach the second line then?

Jigar Gor
Jigar Gor
Courses Plus Student 1,568 Points
Jigar Gor
Jigar Gor
Courses Plus Student 1,568 Points

If your first statement returns, you will never be able to get to the second line. You must consolidate the two slices you want to return. You can either assume only strings will be passed and use the '+' operator, or check for what type the iterable passed is before using an appropriate operator/function. Example: return first4 + last4