Document additionally an existing issue number pandas-dev#19995 for GroupBy.shift

noritada · noritada · commit 6eb0d287f569 · 2019-09-09T20:07:36.000+09:00
diff --git a/doc/source/whatsnew/v0.25.2.rst b/doc/source/whatsnew/v0.25.2.rst
@@ -78,7 +78,7 @@ Groupby/resample/rolling
 ^^^^^^^^^^^^^^^^^^^^^^^^
 
 - Bug incorrectly raising an ``IndexError`` when passing a list of quantiles to :meth:`pandas.core.groupby.DataFrameGroupBy.quantile` (:issue:`28113`).
-- Bug in :meth:`pandas.core.groupby.GroupBy.shift`, :meth:`pandas.core.groupby.GroupBy.bfill` and :meth:`pandas.core.groupby.GroupBy.ffill` where timezone information would be dropped (:issue:`27992`)
+- Bug in :meth:`pandas.core.groupby.GroupBy.shift`, :meth:`pandas.core.groupby.GroupBy.bfill` and :meth:`pandas.core.groupby.GroupBy.ffill` where timezone information would be dropped (:issue:`19995`, :issue:`27992`)
 -
 -
 -
diff --git a/pandas/tests/groupby/test_groupby.py b/pandas/tests/groupby/test_groupby.py
@@ -1929,7 +1929,7 @@ def test_groupby_axis_1(group_name):
     ],
 )
 def test_shift_bfill_ffill_tz(tz_naive_fixture, op, expected):
-    # GH27992: Check that timezone does not drop in shift, bfill, and ffill
+    # GH19995, GH27992: Check that timezone does not drop in shift, bfill, and ffill
     tz = tz_naive_fixture
     data = {
         "id": ["A", "B", "A", "B", "A", "B"],

Original file line number	Diff line number	Diff line change
`@@ -78,7 +78,7 @@ Groupby/resample/rolling`
`78`	`78`	`^^^^^^^^^^^^^^^^^^^^^^^^`
`79`	`79`
`80`	`80`	- Bug incorrectly raising an ``IndexError`` when passing a list of quantiles to :meth:`pandas.core.groupby.DataFrameGroupBy.quantile` (:issue:`28113`).
`81`		-- Bug in :meth:`pandas.core.groupby.GroupBy.shift`, :meth:`pandas.core.groupby.GroupBy.bfill` and :meth:`pandas.core.groupby.GroupBy.ffill` where timezone information would be dropped (:issue:`27992`)
	`81`	+- Bug in :meth:`pandas.core.groupby.GroupBy.shift`, :meth:`pandas.core.groupby.GroupBy.bfill` and :meth:`pandas.core.groupby.GroupBy.ffill` where timezone information would be dropped (:issue:`19995`, :issue:`27992`)
`82`	`82`	`-`
`83`	`83`	`-`
`84`	`84`	`-`
Original file line number	Diff line number	Diff line change
`@@ -1929,7 +1929,7 @@ def test_groupby_axis_1(group_name):`
`1929`	`1929`	`],`
`1930`	`1930`	`)`
`1931`	`1931`	`def test_shift_bfill_ffill_tz(tz_naive_fixture, op, expected):`
`1932`		`- # GH27992: Check that timezone does not drop in shift, bfill, and ffill`
	`1932`	`+ # GH19995, GH27992: Check that timezone does not drop in shift, bfill, and ffill`
`1933`	`1933`	`tz = tz_naive_fixture`
`1934`	`1934`	`data = {`
`1935`	`1935`	`"id": ["A", "B", "A", "B", "A", "B"],`