Python pytz: nonexistent time gets AmbiguousTimeError, not NonExistentTimeError

Question

How can I find out if local time is missing? I try with pytz, but it throws an AmbiguousTimeError, not a NonExistentTimeError.

2013-3-31 02:30 will never happen in Copenhagen due to daylight saving time.

local_tz = timezone('Europe/Copenhagen') try: non_e = local_tz.localize(datetime.datetime(2013, 3, 31, 2, 30), is_dst = None) except pytz.AmbiguousTimeError: print "AmbiguousTimeError" 

It goes to the exception handler. I tried:

  except pytz.NonExistentTimeError: #'module' object has no attribute 'NonExistentTimeError' except pytz.exceptions.NonExistentTimeError: #'module' object has no attribute 'exceptions' 

The user provides me with the date and time through the form. This is local time, and I need to find out if the dates and time match.

I use Django with USE_TZ = True , but I don't think that matters.

Answer 1

Update your pytz package. This works for me in version 2012d , for example:

 >>> import pytz, datetime >>> pytz.__version__ '2012d' >>> local_tz = pytz.timezone('Europe/Copenhagen') >>> local_tz.localize(datetime.datetime(2013, 3, 31, 2, 30), is_dst=None) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/pytz/tzinfo.py", line 327, in localize raise NonExistentTimeError(dt) pytz.exceptions.NonExistentTimeError: 2013-03-31 02:30:00 

Use pip install -U pytz or easy_install -U pytz to upgrade.