login_ids = [1, 2, 3, 4, 5] # ログインユーザー一覧
paid_ids = [2, 3, 4] # プレミアムユーザー一覧
block_ids = [1, 2] # ブロックされたユーザー一覧

login_ids = set(login_ids)
paid_ids = set(paid_ids)
block_ids = set(block_ids)

def solve(login_ids,paid_ids,block_ids):
return (login_ids and paid_ids) - block_ids

ans = []
for id in login_ids:
if id in block_ids:
continue
if id in paid_ids:
ans.append(id)
return ans

# [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
# => [[1, 3], [4, 6], [7, 9]]

x = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]

ans = []
for ele in x:
ans.append([ele[0],ele[2]])

[[True, False, Ture], [True, False, Ture], [True, False, Ture]]
x.np.where(index != 1)

x[:,1:]

x[:,[0,2]]