python if statement not equal to certain numbers

Question

Is there a way to shorten this if statement?

if i != 9 or i != 23 or i != 25 or i != 33 or i !=35:
    print(i)

It won't matter much for a few elements, you can use a tuple, list etc.. but if you had a lot of values to check a set will be a lot faster — Padraic Cunningham, Apr 13 '16 at 09:32

score 3 · Accepted Answer · answered Apr 13 '16 at 09:39

3

You can use a set and check if i is not in the set:

 invalid_set = {9, 23,25, 33, 35} 
 if  i not in  invalid_set:
     # all good

A set lookup if O(1) vs O(n) with a list, tuple etc..

answered Apr 13 '16 at 09:39

score 0 · Answer 2 · answered Apr 13 '16 at 09:29

0

how about

if i not in [9,23,25,33,25]:
    print(i)

answered Apr 13 '16 at 09:29

Ashish

2 Answers2