Integer Division with random.randint

Question

When using random.randint() in this form, I can't get integer division to work:

(random.randint(-40, 215) - -40) // (215 - -40)

This returns 0, however something like this returns correctly:

random.randint(3,5) - 2 // 2

How do I format the first equation correctly to get a rounded integer instead of defaulting to 0?

Your first equation is correct: it converts it to the `[0,1)` interval. Since you use integer division the result is thus always 0. — Willem Van Onsem, Feb 25 '17 at 20:35

score 1 · Answer 1 · answered Feb 25 '17 at 20:43

1

In case someone runs into this when normalizing integers, here is a normalization between -40 and 215:

(random.randint(-40,215) - -40.0) * 10 // (215.0 - -40.0) * 10

Kudos to Willem Van Onsem

answered Feb 25 '17 at 20:43

WMueller

score 0 · Answer 2 · edited Sep 10 '17 at 17:48

0

In case you want the non int answer

print (random.randint(-40, 215) +40.0) / (215+40)

The result lies always between (0,1) step of which is always 0 and hence it returns always zero.

edited Sep 10 '17 at 17:48

Qiu

answered Sep 10 '17 at 17:08

warfreak1

2 Answers2