Subtracting two lists with indices in Python

Question

I have two lists, A1 and A2 with indices. I want to find out A1 - A2. The desired output is attached.

A1= [(0,0),(0,1),(0,2),(1,0),(1,1),(2,1),(2,0),(2,1),(2,2)]
A2= [(0,0),(0,1),(0,2)]

The desired output is

[(1,0),(1,1),(2,1),(2,0),(2,1),(2,2)]

Could you provide your attempt? – Josip Juros Apr 14 '22 at 11:53 — Josip Juros, Apr 14 '22 at 11:53

score 0 · Accepted Answer · answered Apr 14 '22 at 11:57

0

You may try something like this

A3 = [i for i in A1 if not i in A2]
print(A3)

answered Apr 14 '22 at 11:57

Python learner

score 0 · Answer 2 · answered Apr 14 '22 at 12:00

You can iterate in the list A2 and remove each element from A1:

A1= [(0,0),(0,1),(0,2),(1,0),(1,1),(2,1),(2,0),(2,1),(2,2)]
A2= [(0,0),(0,1),(0,2)]

for idx in A2:
   A1.remove(idx)
print(A1)

and the output should be:

[(1, 0), (1, 1), (2, 1), (2, 0), (2, 1), (2, 2)]

2 Answers2