RuntimeWarning DateTimeField received a naive datetime

Question

I m trying to send a simple mail using IPython  I have not set up any models still getting this error  What can be done      Error      home sourabh Django learn local lib python2 7 site-packages django db models fields init py 827  RuntimeWarning  DateTimeField received a naive datetime  2013-09-04 14 14 13 698105  while time zone support is active      RuntimeWarning    Tried   The first step is to add USE TZ   True to your settings file and install pytz  if possible    Error changed     learn sourabh sL   Django learn event  python manage py shell  home sourabh Django learn local lib python2 7 site-packages django db backends sqlite3 base py 53  RuntimeWarning  SQLite received a naive datetime  2013-09-05 00 59 32 181872  while time zone support is active    RuntimeWarning

User · Answer

In the model  do not pass the value  timezone now    Rather  remove the parenthesis  and pass  timezone now  If you continue to get a runtime error warning  consider changing the model field from DateTimeField to DateField

User · Answer

You can also override settings  particularly useful in tests   from django test import override settings  with override settings USE TZ False         Insert your code that causes the warning here     pass   This will prevent you from seeing the warning  at the same time anything in your code that requires a timezone aware datetime may give you problems  If this is the case  see kravietz answer

User · Answer

If you are trying to transform a naive datetime into a datetime with timezone in django  here is my solution    gt  gt  gt  import datetime  gt  gt  gt  from django utils import timezone  gt  gt  gt  t1   datetime datetime strptime  2019-07-16 22 24 00     Y- m- d  H  M  S    gt  gt  gt  t1     datetime datetime 2019  7  16  22  24   gt  gt  gt  current tz   timezone get current timezone    gt  gt  gt  t2   current tz localize t1   gt  gt  gt  t2     datetime datetime 2019  7  16  22  24  tzinfo  lt DstTzInfo  Asia Shanghai  CST 8 00 00 STD gt    gt  gt  gt    t1 is a naive datetime and t2 is a datetime with timezone in django s settings

User · Answer

One can both fix the warning and use the timezone specified in settings py  which might be different from UTC    For example in my settings py I have   USE TZ   True TIME ZONE    Europe Paris    Here is a solution  the advantage is that str mydate  gives the correct time    gt  gt  gt  from datetime import datetime  gt  gt  gt  from django utils timezone import get current timezone  gt  gt  gt  mydate   datetime now tz get current timezone     gt  gt  gt  mydate datetime datetime 2019  3  10  11  16  9  184106       tzinfo  lt DstTzInfo  Europe Paris  CET 1 00 00 STD gt    gt  gt  gt  str mydate   2019-03-10 11 16 09 184106 01 00    Another equivalent method is using make aware  see dmrz post

User · Answer

Use django utils timezone make aware function to make your naive datetime objects timezone aware and avoid those warnings   It converts naive datetime object  without timezone info  to the one that has timezone info  using timezone specified in your django settings if you don t specify it explicitly as a second argument    import datetime from django conf import settings from django utils timezone import make aware  naive datetime   datetime datetime now   naive datetime tzinfo    None  settings TIME ZONE     UTC  aware datetime   make aware naive datetime  aware datetime tzinfo     lt UTC gt

User · Answer

The problem is not in Django settings  but in the date passed to the model  Here s how a timezone-aware object looks like    gt  gt  gt  from django utils import timezone  gt  gt  gt  import pytz  gt  gt  gt  timezone now   datetime datetime 2013  11  20  20  8  7  127325  tzinfo pytz UTC    And here s a naive object    gt  gt  gt  from datetime import datetime  gt  gt  gt  datetime now   datetime datetime 2013  11  20  20  9  26  423063    So if you are passing email date anywhere  and it eventually gets to some model   just use Django s now    If not  then it s probably an issue with an existing package that fetches date without timezone and you can patch the package  ignore the warning or set USE TZ to False

User · Answer

Just to fix the error to set current time  from django utils import timezone import datetime  datetime datetime now tz timezone utc    you can use this value

User · Answer

make sure settings py has USE TZ   True In your python file  from django utils import timezone  timezone now     use its value in model field

User · Answer

Quick and dirty - Turn it off   USE TZ   False   in your settings py

[django] RuntimeWarning: DateTimeField received a naive datetime

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