Code failing in test submission but not when run on computer

[opheron]

I have the following code:

def remove_duplicates_in_order(a_list):
    a_list = list(set(a_list))
    new_list = sorted(a_list)
    return new_list

This seems to work when I test in IDLE/Python shell on my own computer, but fails the test on submission. What am I missing?

[santiagobasulto]

That seems right. What error are you getting?

[prestonr83]

I also am unable to run the test. get following error.

File "/usercode/file.py", line 5
import sys
^
SyntaxError: invalid syntax

[martinzugnoni]

I've just tried executing the code above and the execution worked, but one test is failing.

Remember that you need to keep the original list ordering. When you are converting the list into a set() you are loosing ordering because sets are unordered collections.

[jim-hart]

I think the confusion comes from this

Important! The elements should be in order.

At first I thought it meant they needed to be in sorted order, but after seeing this post my confusion was cleared up.