How to remove duplicate items from a list using list comprehension?

Question

How to remove duplicate items from a list using list comprehension? I have following code:

a = [1, 2, 3, 3, 5, 9, 6, 2, 8, 5, 2, 3, 5, 7, 3, 5, 8]
b = []
b =         


        

Answer 1

Use keys on a dict constructed with values in a as its keys.

b = dict([(i, 1) for i in a]).keys()

Or use a set:

b = [i for i in set(a)]