BUG: Incomplete Styler copy methods fix (#39708) (#39975)

Author: rlukevie

doc/source/whatsnew/v1.3.0.rst

@@ -131,7 +131,7 @@ Other enhancements
 - Disallow :class:`DataFrame` indexer for ``iloc`` for :meth:`Series.__getitem__` and :meth:`DataFrame.__getitem__`, (:issue:`39004`)
 - :meth:`Series.apply` can now accept list-like or dictionary-like arguments that aren't lists or dictionaries, e.g. ``ser.apply(np.array(["sum", "mean"]))``, which was already the case for :meth:`DataFrame.apply` (:issue:`39140`)
 - :meth:`DataFrame.plot.scatter` can now accept a categorical column as the argument to ``c`` (:issue:`12380`, :issue:`31357`)
-- :meth:`.Styler.set_tooltips` allows on hover tooltips to be added to styled HTML dataframes (:issue:`35643`, :issue:`21266`, :issue:`39317`)
+- :meth:`.Styler.set_tooltips` allows on hover tooltips to be added to styled HTML dataframes (:issue:`35643`, :issue:`21266`, :issue:`39317`, :issue:`39708`)
 - :meth:`.Styler.set_tooltips_class` and :meth:`.Styler.set_table_styles` amended to optionally allow certain css-string input arguments (:issue:`39564`)
 - :meth:`.Styler.apply` now more consistently accepts ndarray function returns, i.e. in all cases for ``axis`` is ``0, 1 or None`` (:issue:`39359`)
 - :meth:`.Styler.apply` and :meth:`.Styler.applymap` now raise errors if wrong format CSS is passed on render (:issue:`39660`)

pandas/io/formats/style.py

@@ -785,16 +785,29 @@ def _copy(self, deepcopy: bool = False) -> Styler:
             self.data,
             precision=self.precision,
             caption=self.caption,
-            uuid=self.uuid,
-            table_styles=self.table_styles,
+            table_attributes=self.table_attributes,
+            cell_ids=self.cell_ids,
             na_rep=self.na_rep,
         )
+
+        styler.uuid = self.uuid
+        styler.hidden_index = self.hidden_index
+
         if deepcopy:
             styler.ctx = copy.deepcopy(self.ctx)
             styler._todo = copy.deepcopy(self._todo)
+            styler.table_styles = copy.deepcopy(self.table_styles)
+            styler.hidden_columns = copy.copy(self.hidden_columns)
+            styler.cell_context = copy.deepcopy(self.cell_context)
+            styler.tooltips = copy.deepcopy(self.tooltips)
         else:
             styler.ctx = self.ctx
             styler._todo = self._todo
+            styler.table_styles = self.table_styles
+            styler.hidden_columns = self.hidden_columns
+            styler.cell_context = self.cell_context
+            styler.tooltips = self.tooltips
+
         return styler
 
     def __copy__(self) -> Styler:

pandas/tests/io/formats/style/test_style.py

@@ -72,28 +72,101 @@ def test_update_ctx_flatten_multi_and_trailing_semi(self):
         }
         assert self.styler.ctx == expected
 
-    def test_copy(self):
-        s2 = copy.copy(self.styler)
-        assert self.styler is not s2
-        assert self.styler.ctx is s2.ctx  # shallow
-        assert self.styler._todo is s2._todo
-
-        self.styler._update_ctx(self.attrs)
-        self.styler.highlight_max()
-        assert self.styler.ctx == s2.ctx
-        assert self.styler._todo == s2._todo
-
-    def test_deepcopy(self):
-        s2 = copy.deepcopy(self.styler)
-        assert self.styler is not s2
-        assert self.styler.ctx is not s2.ctx
-        assert self.styler._todo is not s2._todo
+    @pytest.mark.parametrize("do_changes", [True, False])
+    @pytest.mark.parametrize("do_render", [True, False])
+    def test_copy(self, do_changes, do_render):
+        # Updated in GH39708
+        # Change some defaults (to check later if the new values are copied)
+        if do_changes:
+            self.styler.set_table_styles(
+                [{"selector": "th", "props": [("foo", "bar")]}]
+            )
+            self.styler.set_table_attributes('class="foo" data-bar')
+            self.styler.hidden_index = not self.styler.hidden_index
+            self.styler.hide_columns("A")
+            classes = pd.DataFrame(
+                [["favorite-val red", ""], [None, "blue my-val"]],
+                index=self.df.index,
+                columns=self.df.columns,
+            )
+            self.styler.set_td_classes(classes)
+            ttips = pd.DataFrame(
+                data=[["Favorite", ""], [np.nan, "my"]],
+                columns=self.df.columns,
+                index=self.df.index,
+            )
+            self.styler.set_tooltips(ttips)
+            self.styler.cell_ids = not self.styler.cell_ids
+
+        if do_render:
+            self.styler.render()
+
+        s_copy = copy.copy(self.styler)
+        s_deepcopy = copy.deepcopy(self.styler)
+
+        assert self.styler is not s_copy
+        assert self.styler is not s_deepcopy
+
+        # Check for identity
+        assert self.styler.ctx is s_copy.ctx
+        assert self.styler._todo is s_copy._todo
+        assert self.styler.table_styles is s_copy.table_styles
+        assert self.styler.hidden_columns is s_copy.hidden_columns
+        assert self.styler.cell_context is s_copy.cell_context
+        assert self.styler.tooltips is s_copy.tooltips
+        if do_changes:  # self.styler.tooltips is not None
+            assert self.styler.tooltips.tt_data is s_copy.tooltips.tt_data
+            assert (
+                self.styler.tooltips.class_properties
+                is s_copy.tooltips.class_properties
+            )
+            assert self.styler.tooltips.table_styles is s_copy.tooltips.table_styles
+
+        # Check for non-identity
+        assert self.styler.ctx is not s_deepcopy.ctx
+        assert self.styler._todo is not s_deepcopy._todo
+        assert self.styler.hidden_columns is not s_deepcopy.hidden_columns
+        assert self.styler.cell_context is not s_deepcopy.cell_context
+        if do_changes:  # self.styler.table_style is not None
+            assert self.styler.table_styles is not s_deepcopy.table_styles
+        if do_changes:  # self.styler.tooltips is not None
+            assert self.styler.tooltips is not s_deepcopy.tooltips
+            assert self.styler.tooltips.tt_data is not s_deepcopy.tooltips.tt_data
+            assert (
+                self.styler.tooltips.class_properties
+                is not s_deepcopy.tooltips.class_properties
+            )
+            assert (
+                self.styler.tooltips.table_styles
+                is not s_deepcopy.tooltips.table_styles
+            )
 
         self.styler._update_ctx(self.attrs)
         self.styler.highlight_max()
-        assert self.styler.ctx != s2.ctx
-        assert s2._todo == []
-        assert self.styler._todo != s2._todo
+        assert self.styler.ctx == s_copy.ctx
+        assert self.styler.ctx != s_deepcopy.ctx
+        assert self.styler._todo == s_copy._todo
+        assert self.styler._todo != s_deepcopy._todo
+        assert s_deepcopy._todo == []
+
+        equal_attributes = [
+            "table_styles",
+            "table_attributes",
+            "cell_ids",
+            "hidden_index",
+            "hidden_columns",
+            "cell_context",
+        ]
+        for s2 in [s_copy, s_deepcopy]:
+            for att in equal_attributes:
+                assert self.styler.__dict__[att] == s2.__dict__[att]
+            if do_changes:  # self.styler.tooltips is not None
+                tm.assert_frame_equal(self.styler.tooltips.tt_data, s2.tooltips.tt_data)
+                assert (
+                    self.styler.tooltips.class_properties
+                    == s2.tooltips.class_properties
+                )
+                assert self.styler.tooltips.table_styles == s2.tooltips.table_styles
 
     def test_clear(self):
         # updated in GH 39396