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Python Python Collections (Retired) Lists Redux Manipulating Lists

Dimitar Tsvetkov
Dimitar Tsvetkov
6,806 Points

Collection challenge. Please help! Why my code doesn't work?

It worked for the first task, but it didn't work for the second. Also both tasks work in Python 2.7 IDE.....

lists.py
the_list = ["a", 2, 3, 1, False, [1, 2, 3]]

# Your code goes below here
the_list_1 = the_list.pop(3)
the_list.insert(0, the_list_1)

del the_list[4]
print the_list

2 Answers

Ken Alger
STAFF
Ken Alger
Treehouse Teacher

Dimitar;

Welcome to Treehouse!

Task 2:

Use .remove() and/or del to remove the string, boolean, and list members of the_list.

I don't see in your code where you are doing anything to remove all three of the required items. We need to remove the string "a", the boolean False, and the list [1, 2, 3]. Remember that since we have performed operations on the list already in Task 1, the index values of the items may have changed.

Post back if you are still stuck.

Happy coding,
Ken

Dimitar Tsvetkov
Dimitar Tsvetkov
6,806 Points

Thanks for the point. I am still trying to make it work. Here is what I've done:

the_list = ["a", 2, 3, 1, False, [1, 2, 3]]

Your code goes below here

the_list_1 = the_list.pop(3) the_list.insert(0, the_list_1)

the_list.remove("a") the_list.remove(False) the_list.remove([1,2,3]) print the_list

It does the job when I do it in a 2.7 Python IDE....

Dimitar Tsvetkov
Dimitar Tsvetkov
6,806 Points

I did it finally. Thanks for the help. It didn't want to accept "print the_list", so I removed it:

the_list.remove("a") the_list.remove(False) the_list.remove([1, 2, 3])

print the_list