formatting, fix flake8 errors

Author: ArtificialQualia

pandas/tests/arithmetic/test_timedelta64.py

@@ -446,28 +446,28 @@ def test_timedelta_nat_comparisons(self):
         td = pd.Timedelta(0)
 
         result = td > NaT
-        assert result == False
+        assert result is False
 
         result = td >= NaT
-        assert result == False
+        assert result is False
 
         result = td < NaT
-        assert result == False
+        assert result is False
 
         result = td <= NaT
-        assert result == False
+        assert result is False
 
         result = NaT > td
-        assert result == False
+        assert result is False
 
         result = NaT >= td
-        assert result == False
+        assert result is False
 
         result = NaT < td
-        assert result == False
+        assert result is False
 
         result = NaT <= td
-        assert result == False
+        assert result is False
 
 
 class TestAddSubNaTMasking(object):