python random.randint() did not return any value

Question

I need to append random hours to date field. For this I used following code:

datetime.utcnow().date() + relativedelta(hours=random.randint(0,23))

This returned response:

datetime.date(2018, 7, 5)

Above response is not reproducible. Wondering if using random.randint() is reliable. Please let me know what caused this to occur or what other solution I can use for this problem.

Are you sure it didn't just return 0?

user2357112
– user2357112

2018-07-05 06:17:46 +00:00
Commented Jul 5, 2018 at 6:17 — user2357112
– user2357112, Commented Jul 5, 2018 at 6:17
Actually, wait, why are you trying to add hours to a date?

user2357112
– user2357112

2018-07-05 06:18:16 +00:00
Commented Jul 5, 2018 at 6:18 — user2357112
– user2357112, Commented Jul 5, 2018 at 6:18
I want to randomise some entries for scheduling purposes.

Aparna Kulkarni
– Aparna Kulkarni

2018-07-05 06:24:45 +00:00
Commented Jul 5, 2018 at 6:24 — Aparna Kulkarni
– Aparna Kulkarni, Commented Jul 5, 2018 at 6:24

Lutz Büch · Accepted Answer · 2018-07-05 06:23:45Z

1

This happens exactly when random.randint(0,23) returns 0. In that case, you get a final result of type datetime.date instead of datetime.datetime, because the delta is basically zero. So random.randint() is reliable, but sometimes it does return 0, as expected.

answered Jul 5, 2018 at 6:23

Lutz Büch

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1 Comment

Aparna Kulkarni Over a year ago

Makes sense. Thanks for your response.

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