Compare two list and get unique elements from first list Python

Question

I have two lists

A=[1,3,5,6] 
B=[3,5,7]

I need to get only the elements that are part of A but not part of B. Thus, the result of this must be Result= [1,6]

I'm trying to get the difference, but the output I get is the following

Result = [i for i in A + B if i not in A or i not in B]
Result = [1,6,7]

How could I get [1,6] instead?

User set operations, something like this - set(A) - set(B) – thatisvivek Oct 14 '20 at 17:24 — thatisvivek, Oct 14 '20 at 17:24

score 1 · Accepted Answer · answered Oct 14 '20 at 17:24

1

result = [i for i in A if i not in B]

answered Oct 14 '20 at 17:24

hchw

score 0 · Answer 2 · answered Oct 14 '20 at 17:24

0

Why not use sets:

set(A) - set(B)

Sets comprise unique elements, and subtraction corresponds to set difference.

answered Oct 14 '20 at 17:24

Jussi Nurminen

2 Answers2