remove duplicates in list, but keep one copy

Question

Say I have a list

list = ["1","2","1","3"]

and I want to get rid of the duplicate 1's but I want to keep one copy so the list would read

list = ["1","2","3"]

I know I can use set() to get rid of the duplicates, but I will not be able to keep a copy. How would I go about keeping a copy?

What do you mean by keeping a copy? If you make a set out of that list, the list will stay intact. — Francisco, Oct 18 '16 at 20:02
The answer you've shown is exactly what you would get from converting your list to a set, ignoring issues of ordering... — Sohier Dane, Oct 18 '16 at 20:03
@Francisco Couzo oh... woops i'm sorry, I haven't actually wrote the code yet and when reading about set() I was under the assumption it removed all the duplicates, and didn't keep any of them. So simply using set() would work? — Matthew Pearson, Oct 18 '16 at 20:11

score 2 · Answer 1 · answered Oct 18 '16 at 20:05

2

use set and then convert it to list again

lists = ["1","2","1","3"]
new_list = list(set(lists))

answered Oct 18 '16 at 20:05

Wasi

1 Answers1