CODEWITHSUNDEEP
django
sly_Chandan
sly_Chandan

Reputation: 3515

How to subtract two datetime variable in django

now = datetime.today()

for item in itemList:
    elapsed = item.endDate
    if elapsed - now > 1:
        item.overdue = 1
    elif now - now > 3:
        item.banned = 1

can't subtract offset-naive and offset-aware datetimes

Upvotes: 1

Views: 773

Answers (2)

Jmills
Jmills

Reputation: 2422

You can get a timezone aware "now" from django.utils.timezone.

from django.utils import timezone
now = timezone.now()

When time zone support is enabled (USE_TZ=True), Django uses time-zone-aware datetime objects. If your code creates datetime objects, they should be aware too.

But then do also confirm you are comparing dates as you seem to intend, as a date does not have tzinfo whereas datetime does:

Upvotes: 0

sly_Chandan
sly_Chandan

Reputation: 3515

now = datetime.now(timezone.utc)

for item in itemList:
    elapsed = now - item.endDate               
    bannedDiff = now - item.endDate
    if elapsed > timedelta(days=-1):
        item.overdue = 1
    elif bannedDiff > timedelta(days=-6):
        item.banned = 1

Figured it out! Thanks!

Upvotes: 1

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