STYLE: Inconsistent namespace - api (#39992) (#40223)

Author: 01-vyom

pandas/tests/api/test_api.py

@@ -236,9 +236,9 @@ def test_datetime():
 
     with warnings.catch_warnings():
         warnings.simplefilter("ignore", FutureWarning)
-        assert datetime(2015, 1, 2, 0, 0) == pd.datetime(2015, 1, 2, 0, 0)
+        assert datetime(2015, 1, 2, 0, 0) == datetime(2015, 1, 2, 0, 0)
 
-        assert isinstance(pd.datetime(2015, 1, 2, 0, 0), pd.datetime)
+        assert isinstance(datetime(2015, 1, 2, 0, 0), datetime)
 
 
 def test_sparsearray():