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DEPR: Series.ptp() #21614

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Merged
merged 9 commits into from
Jul 6, 2018
Merged

DEPR: Series.ptp() #21614

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6559bbf
Initial commit
KalyanGokhale Jun 24, 2018
d643966
Updated stacklevel
KalyanGokhale Jun 24, 2018
9e72362
Updated issue number
KalyanGokhale Jun 24, 2018
424a670
Suppressed warnings, whatsnew
KalyanGokhale Jun 25, 2018
0028c7c
Moved deprecation docstring, fixed tests
KalyanGokhale Jun 26, 2018
c25ea13
Merge branch 'master' into PTP
KalyanGokhale Jun 26, 2018
2932a99
Update api.rst
KalyanGokhale Jun 28, 2018
446c884
Update generic.py
KalyanGokhale Jul 6, 2018
cede496
Update generic.py
KalyanGokhale Jul 6, 2018
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Initial commit 
PTP
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@KalyanGokhale
KalyanGokhale committed Jun 24, 2018
commit 6559bbf86f13d7034694fea55dedd0d47490e2c9
2 changes: 1 addition & 1 deletion doc/source/whatsnew/v0.24.0.txt
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Expand Up @@ -83,7 +83,7 @@ Deprecations
~~~~~~~~~~~~

- :meth:`DataFrame.to_stata`, :meth:`read_stata`, :class:`StataReader` and :class:`StataWriter` have deprecated the ``encoding`` argument. The encoding of a Stata dta file is determined by the file type and cannot be changed (:issue:`21244`).
-
- :meth:`Series.ptp` is deprecated. Use numpy.ptp instead (:issue:`18262`)
-

.. _whatsnew_0240.prior_deprecations:
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7 changes: 7 additions & 0 deletions pandas/core/generic.py
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Expand Up @@ -8871,8 +8871,15 @@ def _add_series_only_operations(cls):
axis_descr, name, name2 = _doc_parms(cls)

def nanptp(values, axis=0, skipna=True):
"""
.. deprecated:: 0.24.0
Use numpy.ptp instead
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I am not sure this is the right format for the doc-str, cc @jorisvandenbossche

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@KalyanGokhale KalyanGokhale Jun 25, 2018 •
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Thanks - will wait for confirmation on right format from @jorisvandenbossche

Based on the other deprecation PRs I checked, this seemed to be the expected format - for other messages I had noted earlier I got Travis failures (example below from different PR submitted)

Check for deprecated messages without sphinx directive
pandas/core/indexes/multi.py:        DEPRECATED: to_hierarchical will be removed in a future version.
Check for deprecated messages without sphinx directive DONE
...
The command "ci/lint.sh" exited with 1.

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Yes, this is the correct format. But, shouldn't this rather be in cls.ptp docstring passed to _make_stat_function below?
(didn't really check, but make sure that pd.Series.ptp? gives the correct docstring)

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Did a quick check, and indeed adding the deprecation message does not update the actual docstring of Series.ptp, you need to add it to the argument passed to _make_stat_function a few lines below

"""
nmax = nanops.nanmax(values, axis, skipna)
nmin = nanops.nanmin(values, axis, skipna)
warnings.warn("Method .ptp is deprecated and will be removed "
"in a future version. Use numpy.ptp instead.",
FutureWarning, stacklevel=2)
return nmax - nmin

cls.ptp = _make_stat_function(
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6 changes: 5 additions & 1 deletion pandas/tests/series/test_analytics.py
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Expand Up @@ -1381,8 +1381,12 @@ def test_ptp(self):
ser = Series(arr)
assert np.ptp(ser) == np.ptp(arr)

# GH11163
s = Series([3, 5, np.nan, -3, 10])

# Xref GH18262
with tm.assert_produces_warning(FutureWarning):
s.ptp()
# GH11163
assert s.ptp() == 13
assert pd.isna(s.ptp(skipna=False))

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