'Construct a DateTimeProperty
Args:
verbose_name: Verbose name is always first parameter.
auto_now: Date/time property is updated with the current time every time
it is saved to the datastore.  Useful for properties that want to track
the modification time of an instance.
auto_now_add: Date/time is set to the when its instance is created.
Useful for properties that record the creation time of an entity.'

def __init__(self, verbose_name=None, auto_now=False, auto_now_add=False, **kwds):

    super(DateTimeProperty, self).__init__(verbose_name, **kwds)
    self.auto_now = auto_now
    self.auto_now_add = auto_now_add
