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Nancy Melucci
Courses Plus Student 35,157 PointsCan't figure this code challenge out....
I am getting the error message AttributeError: 'int' object has no attribute 'insert'
Running it in PyCharm as a test before using the Code Challenge area.
Any hints would be appreciated. I've tried it several different ways....nothing works. Thanks.
the_list = ["a", 2, 3, 1, False, [1, 2, 3]]
# Your code goes below here
the_list_1 = the_list.pop(3).insert(the_list(0))
4 Answers
Juan Martin
14,335 PointsHello my friend!
You can do it step by step, and also remember that "insert" takes 2 arguments (first: index, second: value). Here's an example of how you can do it:
the_list = ["a", 2, 3, 1, False, [1, 2, 3]]
# Your code goes below here
value = the_list.pop(3)
the_list.insert(0, value)
Hope this works for you :)
Tree Casiano
16,436 PointsHi Nancy, You don't need to create a new variable. You can simply insert the value of the_list.pop(3) into insert().
the_list.insert(0, the_list.pop(3))
You need to use 0 as the first argument in the insert() function to indicate the index where the value returned by pop() will be assigned.
Juan Martin
14,335 PointsThat's correct :) but if you're new to Python, I think it's a better way to explain it step by step more explicitly using variables :P
Nancy Melucci
Courses Plus Student 35,157 PointsThese are both good but I used Juan's solution. I figured out part 2 with my own tiny little mind but part 3 is not working and it's killing the first two stages. The frustrating thing is that it works in PyCharm one of the IDEs I use. But it fails in the auto-grader here.
value = the_list.pop(3)
the_list.insert(0, value)
del the_list[1]
del the_list[3]
del the_list[3]
the_list.extend([4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20])
Kenneth Love
Treehouse Guest TeacherYour code just passed all three steps for me. What error are you getting?
Nancy Melucci
Courses Plus Student 35,157 PointsHa ha...it just passed for me too. Maybe it was just feeling cranky. Or (at 4:50AM PST) I hit some key I should not have hit, trying to enter a correct solution....thanks Kenneth!