BUG: Fix DatetimeIndex timezone preservation when joining indexes with same timezone but different units #61234
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…h same timezone but different units
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Hi @rhshadrach, could you please check this one out? |
rhshadrach
requested changes
Apr 16, 2025
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@mroeschke - this change will make it so the unit comes out to be the minimum between the two time inputs. Does that look like the correct behavior to you?
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| # Test union preserves timezone when units differ | ||
| result = idx1.union(idx2) | ||
| expected = date_range("2000-01-01", periods=3, tz=tz).as_unit("ns") | ||
| tm.assert_index_equal(result, expected) | ||
| assert result.tz == idx1.tz # Original timezone is preserved |
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Can you either break these up into separate tests or parametrize them.
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doc/source/whatsnew/vX.X.X.rstfile if fixing a bug or adding a new feature.