Can't calculate the difference between 2 days in hours

Question

I need to check if some date and now arent' different more than in 18 hours:

dt = parser.parse("some date 123") #working well

diff = datetime.datetime.now() - dt
print "datetime.datetime.now() - dt = %s" % diff  # 31 days, 0:08:04.882498 -- correct
print "datetime.datetime.now() - dt seconds = %s" % diff.seconds # 484 -- too

(datetime.datetime.now() - dt).seconds / 3600) < 18 # returns True always

As you can see, even though the dates are different in 31 days, the amount of seconds if very little which doesn't allow me to calculate the amount of hours. Why is it so small? Should it be x * 60 * 60 * amount_of_days? And how can I do what I want?

score 1 · Answer 1 · edited May 23 '17 at 12:12

1

You may try this:

from datetime import date

date0 = date(2014, 9, 07)
date1 = date(2014, 9, 05)
diff = date0 - date1
print diff.days * 24

Also check How do I check the difference, in seconds, between two dates?

or

>>> from datetime import datetime
>>> date0 = datetime(2014,09,07,0,0,0)
>>> date1 = datetime(2014,09,01,23,59,59)
>>> date0-date1
datetime.timedelta(6, 1)
>>> (date0-date1).days * 24
144

edited May 23 '17 at 12:12

Community

1
1

answered Sep 07 '14 at 15:01

Rahul Tripathi

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why do you multiple diff.days by 24? – Incerteza Sep 07 '14 at 16:10
@AlexanderSupertramp:- I thought you wanted the differences in hours. So 1 day is equal to 24 hence multiplied by 24. Did I missed anything? – Rahul Tripathi Sep 07 '14 at 16:13
@AlexanderSupertramp Thats what I answered. If you get the diff in days then multiply it with 24 – Rahul Tripathi Sep 07 '14 at 16:19
but how about 18 hours? Are you sure this code can return the amount of hours different from x * 24, for example, 29? Should I use total_seconds in place of? – Incerteza Sep 07 '14 at 17:12
@AlexanderSupertramp:- You can give it a try and tell us if you face any problem :) – Rahul Tripathi Sep 07 '14 at 17:13
I just did and it didn't give me what I wanted. – Incerteza Sep 07 '14 at 17:15
The second example doesn't work, it says "SyntaxError: invalid token" for "date0 = ..." – Incerteza Sep 07 '14 at 17:17

score 1 · Accepted Answer · answered Sep 07 '14 at 15:05

1

seconds is returning just the number of seconds, not the total number of seconds, for that you can use timedelta.total_seconds.

answered Sep 07 '14 at 15:05

enrico.bacis

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Can't calculate the difference between 2 days in hours

2 Answers2