FIX preserve dtype with datetime columns of different resolution when merging (pandas-dev#53213)

glemaitre · topper-123 · commit d01fc1daec22 · 2023-05-27T07:57:18.000+01:00
diff --git a/pandas/tests/reshape/merge/test_merge.py b/pandas/tests/reshape/merge/test_merge.py
@@ -7,6 +7,7 @@
 
 import numpy as np
 import pytest
+import pytz
 
 from pandas.core.dtypes.common import is_object_dtype
 from pandas.core.dtypes.dtypes import CategoricalDtype
