simplify complex logical condition in python

Question

How can I simplify this complex logical condition?

For a much shorter and more readable code

if i < 13:
 linux0[j] = query_res
elif 13 <= i < 27:
 linux1[j] = query_res
elif 27 <= i < 28:
 linux2[j] = query_res
elif 28 <= i < 33:
 linuxDnsServer1[j] = query_res
elif 33 <= i < 41:
 linuxRadius[j] = query_res
elif 41 <= i < 46:
 gen[j] = query_res
elif 46 <= i < 49:
 cdu[j] = query_res
elif 49 <= i < 55:
 avalanche[j] = query_res
elif 55 <= i < 69:
 defensePro_devices[j] = query_res

Answer 1

It's not clear that it's more understandable, but you can put the limits and lists in another list, and iterate over it;

targets = [(12, linux0), (26, linux1), (27, linux2), (32, linuxDnsServer1),
 (40, linuxRadius), (45, gen), (48, cdu), (54, avalanche), (68, defensePro_devices)]
for limit, target in targets:
 if i <= limit:
 target[j] = query_res
 break

• Brian61354270: To add: 1) If you need non-consecutive intervals, you can swap the limits with explicit range objects and then use if i in interval in place of if i <= limit. 2) You can also add an else branch at the end of the for to handle the case where no match is found (i.e. when the break statement is never reached)
• Barmar: I was going to put #2 in, but since the original code doesn't print an error, I left it out.
• Barmar: Another way to handle non-consecutive intervals is to use an extra list for the gaps.