Finding if a python datetime has no time information

Question

I want to trap values that are like this (in which there is not 'time info' on the datetime):

datetime.datetime(2009, 4, 6, 0, 0)

Is there a better way to detect these values other than testing hour/minute/second?

if value.hour == 0 and value.minute == 0 and value.second == 0:
     # do stuff

Answer 1

In Python 3.4 and earlier

The time method works here. Evaluates as boolean false if there's zero'd-out time info.

if not value.time():
    # do stuff

Answer 2

For python 3.5 and above:

if value.hour == 0 and value.minute == 0 and value.second == 0 and value.microsecond == 0:
  # do stuff

For python lower than 3.5:

if not value.time():
  # do stuff

Explanation: the boolean evaluation of a datetime.time instance was changed in python 3.5 :

In boolean contexts, a time object is always considered to be true.

Changed in version 3.5: Before Python 3.5, a time object was considered to be false if it represented midnight in UTC. This behavior was considered obscure and error-prone and has been removed in Python 3.5. See bpo-13936 for full details.