1In [29]: x = pandas.NaT
2
3In [30]: y = numpy.datetime64('NaT')
4
5In [31]: x != x
6Out[31]: True
7
8In [32]: y != y
9/home/i850228/.local/lib/python3.6/site-packages/IPython/__main__.py:1: FutureWarning: In the future, NAT != NAT will be True rather than False.
10 # encoding: utf-8
11Out[32]: False
12