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BUG: fix datetimeindex repr #53634

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Merged
merged 40 commits into from
Jul 22, 2023
Merged

BUG: fix datetimeindex repr #53634

merged 40 commits into from
Jul 22, 2023

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Simar-B
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@Simar-B Simar-B commented Jun 13, 2023 •
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Slightly modified _is_dates_only in DatetimeIndex as mentioned in the issue.

@Simar-B Simar-B marked this pull request as ready for review June 13, 2023 19:34
@pmlpm1986
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I added some remarks about this PR in: #53470

Unfortunately, I do not know much about DatetimeArrays to be to help.

@Simar-B Simar-B closed this Jun 21, 2023
@Simar-B Simar-B reopened this Jun 21, 2023
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Simar-B commented Jun 29, 2023

@topper-123 could you take a look whenever you get the chance?

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topper-123 requested changes Jul 1, 2023
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Thanks for looking into this.

Looks good generally, a question about the heuristics for finding non-day-based indexes.

pandas/tests/indexes/datetimes/test_datetime.py Outdated
@@ -196,3 +196,17 @@ def test_asarray_tz_aware(self):
result = np.asarray(idx, dtype=object)

tm.assert_numpy_array_equal(result, expected)

def test__is_dates_only_freq_less_than_day(self):
idx = DatetimeIndex(["2012-01-01 00:00:00"], freq=str(60) + "T")
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add gh number as first line for each test (# GH53634).

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_is_dates_only is an internal property, so shouldn't be tested. Can you test that the result from repr(idx) is correct instead.

Also can you move the test to pandas/tests/indexes/datetimes/test_formats.py::TestDatetimeIndexRendering::test_dti_repr_short.

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Could you explain a bit on how the tests at pandas/tests/indexes/datetimes/test_formats.py::TestDatetimeIndexRendering::test_dti_repr_short work? There's no assertion so I'm not sure how they evaluate to a pass or a fail.

@Simar-B Simar-B requested a review from topper-123 July 4, 2023 15:56
@pmlpm1986
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@Simar-B, I added some sanity checks of my own in Simar-B#1

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topper-123 reviewed Jul 15, 2023
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A few comments still, looks close.

mroeschke
mroeschke reviewed Jul 18, 2023
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@Simar-B Simar-B requested review from mroeschke and topper-123 July 18, 2023 20:52
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topper-123 approved these changes Jul 19, 2023
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LGTM. I'll wait for the response from @mroeschke if he has additional comments.

mroeschke
mroeschke reviewed Jul 19, 2023
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mroeschke
mroeschke reviewed Jul 19, 2023
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mroeschke
mroeschke reviewed Jul 19, 2023
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pandas/core/indexes/datetimes.py Outdated
from pandas.io.formats.format import is_dates_only

delta = self.freq.delta if self.freq and hasattr(self.freq, "delta") else None
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Suggested change
delta = self.freq.delta if self.freq and hasattr(self.freq, "delta") else None
delta = getattr(self.freq, "delta", None)

pmlpm1986
pmlpm1986 reviewed Jul 20, 2023
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pandas/tests/indexes/datetimes/test_formats.py
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@pmlpm1986 pmlpm1986 Jul 20, 2023 •
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There seem to be no tests for non-daily and non-hourly freq values. I provided a more comprehensive set of tests in Simar-B#1

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Unfortunately right now it is impossible to differentiate a DatetimeIndex where time has been passed vs when time has not been passed (see here). Therefore, nothing more can be done afaik.

Simar-B and others added 2 commits July 22, 2023 12:00
@Simar-B
Fix formatting
64ddebd
@Simar-B @mroeschke
Use getattr
a9d1698 
Co-authored-by: Matthew Roeschke <[email protected]>
@mroeschke mroeschke added Datetime Datetime data dtype Output-Formatting __repr__ of pandas objects, to_string labels Jul 22, 2023
@mroeschke mroeschke added this to the 2.1 milestone Jul 22, 2023
@mroeschke mroeschke merged commit 3c01ce2 into pandas-dev:main Jul 22, 2023
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Thanks @Simar-B

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@mroeschke mroeschke mroeschke approved these changes

@topper-123 topper-123 topper-123 approved these changes

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Successfully merging this pull request may close these issues.

BUG: date_range and DatetimeIndex return different formats with a single timestamp for midnight
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@Simar-B @pmlpm1986 @mroeschke @topper-123