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jameskoene
5,070 PointsCode works but still receiving error.
Anyone know why my code doesn't work? I tested it in the terminal and got the desired result but I'm still receiving an error on treehouse.
def first_4(four):
four = four[:4]
return four
def first_and_last_4(four):
start = four[:4];
end = four[(len(a)-4):];
value = start + end;
return value
2 Answers
Kenneth Love
Treehouse Guest TeacherSo let's look at that len() line.
Let's assume that four has 10 items in it. Then len(four) would be 10. len(four) - 4 would be 6, right?
But if four has 10 items in it, the indexes are 0 through 9. four[6:] would get only 3 items.
Do you remember something in the videos about negative indexes?
james south
Front End Web Development Techdegree Graduate 33,271 Pointsyou are taking len(a) but a is undefined. should be your parameter. also while it is not throwing the autograder, you don't need semicolons at the end of lines in python.