'Return a Python `datetime` object for this OFTDateTime field.'

@property
def value(self):

    try:
        (yy, mm, dd, hh, mn, ss, tz) = self.as_datetime()
        return datetime(yy.value, mm.value, dd.value, hh.value, mn.value, ss.value)
    except (ValueError, GDALException):
        return None
