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I want to remove those element from list which has repetition more than one it's like set but order should not be change 

[4,6,2,6,1,2] should become [4,6,2,1]

I'am looking for any inbuilt method or list comprehension

Nikola
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    Sets don't have an order. – Klaus D. May 30 '19 at 17:10
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  • Similar question that can help you https://stackoverflow.com/questions/9792664/converting-a-list-to-a-set-changes-element-order – Ander2 May 30 '19 at 17:18
  • Since Python 3.7 you can do `stableDistinct = dict.fromkeys(data,"").keys()` – Alain T. May 30 '19 at 22:30

1 Answers1

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This should do it: use lambda function and remove duplicates using set. Tested on Python 2.7

mylist = [4,6,2,6,1,2]
reduce(lambda r, v: v in r[1] and r or (r[0].append(v) or r[1].add(v)) or r, mylist, ([], set()))[0]
MEdwin
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  • I think a fair amount of explanation is needed for this code snippet to be genuinely useful, otherwise, it's fairly hard to read. Also, in case OP is using python3, `from functools import reduce` will be needed at the top – C.Nivs May 30 '19 at 17:22