Removing the element in a list occuring more than once

Question

I have a list and don't know all the values but I want to remove all the values which occurs more than once and only one of that value is left.Suppose here is the list:

lst = ['one', 'two', 'three', 'four','four','five','five','five']

This is what I need:

lst = ['one', 'two', 'three', 'four','five']

Here is what I have tried:

i=0
for ele in lst:
if ele[i] in lst:
    lst.remove(ele[i])

but it's not working.

Try `list(set(lst))` but it won't preserve the order – Sociopath Nov 13 '19 at 11:22 — Sociopath, Nov 13 '19 at 11:22

score 2 · Answer 1 · answered Nov 13 '19 at 11:23

2

This works pretty well:

lst = ['one', 'two', 'three', 'four','four','five','five','five']
newList = list(dict.fromkeys(lst))
print(newList)

output: ['one', 'two', 'three', 'four', 'five']

answered Nov 13 '19 at 11:23

Uber

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The complicated version of using a `set`. – Matthias Nov 13 '19 at 11:33
Is there any method to use a loop and something like list.pop() or list.remove()? – Sibtain Reza Nov 13 '19 at 12:38
Why would you want to do that? It only requires more computing to do that. – Uber Nov 13 '19 at 12:39
@Uber I am basically trying to solve the problems logically without using functions.I have made an algorithm for it but cannot convert it to code. – Sibtain Reza Nov 13 '19 at 22:28

Removing the element in a list occuring more than once

1 Answers1