TST: Address matplotlib 3.10 deprecation of vert=

Author: mroeschke

pandas/tests/plotting/frame/test_frame.py

@@ -1076,7 +1076,12 @@ def test_boxplot_vertical(self, hist_df):
         labels = [pprint_thing(c) for c in numeric_cols]
 
         # if horizontal, yticklabels are rotated
-        ax = df.plot.box(rot=50, fontsize=8, vert=False)
+        kwargs = (
+            {"vert": False}
+            if Version(mpl.__version__) < Version("3.10")
+            else {"orientation": "horizontal"}
+        )
+        ax = df.plot.box(rot=50, fontsize=8, **kwargs)
         _check_ticks_props(ax, xrot=0, yrot=50, ylabelsize=8)
         _check_text_labels(ax.get_yticklabels(), labels)
         assert len(ax.lines) == 7 * len(numeric_cols)
@@ -1086,12 +1091,13 @@ def test_boxplot_vertical_subplots(self, hist_df):
         df = hist_df
         numeric_cols = df._get_numeric_data().columns
         labels = [pprint_thing(c) for c in numeric_cols]
+        kwargs = (
+            {"vert": False}
+            if Version(mpl.__version__) < Version("3.10")
+            else {"orientation": "horizontal"}
+        )
         axes = _check_plot_works(
-            df.plot.box,
-            default_axes=True,
-            subplots=True,
-            vert=False,
-            logx=True,
+            df.plot.box, default_axes=True, subplots=True, logx=True, **kwargs
         )
         _check_axes_shape(axes, axes_num=3, layout=(1, 3))
         _check_ax_scales(axes, xaxis="log")
@@ -1104,7 +1110,12 @@ def test_boxplot_vertical_positions(self, hist_df):
         numeric_cols = df._get_numeric_data().columns
         labels = [pprint_thing(c) for c in numeric_cols]
         positions = np.array([3, 2, 8])
-        ax = df.plot.box(positions=positions, vert=False)
+        kwargs = (
+            {"vert": False}
+            if Version(mpl.__version__) < Version("3.10")
+            else {"orientation": "horizontal"}
+        )
+        ax = df.plot.box(positions=positions, **kwargs)
         _check_text_labels(ax.get_yticklabels(), labels)
         tm.assert_numpy_array_equal(ax.yaxis.get_ticklocs(), positions)
         assert len(ax.lines) == 7 * len(numeric_cols)

pandas/tests/plotting/test_boxplot_method.py

@@ -22,6 +22,7 @@
     _check_ticks_props,
     _check_visible,
 )
+from pandas.util.version import Version
 
 from pandas.io.formats.printing import pprint_thing
 
@@ -35,6 +36,17 @@ def _check_ax_limits(col, ax):
     assert y_max >= col.max()
 
 
+if Version(mpl._version__) < Version("3.10"):
+    verts = [{"vert": False}, {"vert": True}]
+else:
+    verts = [{"orientation": "horizontal"}, {"orientation": "vertical"}]
+
+
+@pytest.fixture(params=verts)
+def vert(request):
+    return request.param
+
+
 class TestDataFramePlots:
     def test_stacked_boxplot_set_axis(self):
         # GH2980
@@ -312,7 +324,6 @@ def test_specified_props_kwd(self, props, expected):
 
         assert result[expected][0].get_color() == "C1"
 
-    @pytest.mark.parametrize("vert", [True, False])
     def test_plot_xlabel_ylabel(self, vert):
         df = DataFrame(
             {
@@ -322,11 +333,10 @@ def test_plot_xlabel_ylabel(self, vert):
             }
         )
         xlabel, ylabel = "x", "y"
-        ax = df.plot(kind="box", vert=vert, xlabel=xlabel, ylabel=ylabel)
+        ax = df.plot(kind="box", xlabel=xlabel, ylabel=ylabel, **vert)
         assert ax.get_xlabel() == xlabel
         assert ax.get_ylabel() == ylabel
 
-    @pytest.mark.parametrize("vert", [True, False])
     def test_plot_box(self, vert):
         # GH 54941
         rng = np.random.default_rng(2)
@@ -335,13 +345,12 @@ def test_plot_box(self, vert):
 
         xlabel, ylabel = "x", "y"
         _, axs = plt.subplots(ncols=2, figsize=(10, 7), sharey=True)
-        df1.plot.box(ax=axs[0], vert=vert, xlabel=xlabel, ylabel=ylabel)
-        df2.plot.box(ax=axs[1], vert=vert, xlabel=xlabel, ylabel=ylabel)
+        df1.plot.box(ax=axs[0], xlabel=xlabel, ylabel=ylabel, **vert)
+        df2.plot.box(ax=axs[1], xlabel=xlabel, ylabel=ylabel, **vert)
         for ax in axs:
             assert ax.get_xlabel() == xlabel
             assert ax.get_ylabel() == ylabel
 
-    @pytest.mark.parametrize("vert", [True, False])
     def test_boxplot_xlabel_ylabel(self, vert):
         df = DataFrame(
             {
@@ -351,11 +360,10 @@ def test_boxplot_xlabel_ylabel(self, vert):
             }
         )
         xlabel, ylabel = "x", "y"
-        ax = df.boxplot(vert=vert, xlabel=xlabel, ylabel=ylabel)
+        ax = df.boxplot(xlabel=xlabel, ylabel=ylabel, **vert)
         assert ax.get_xlabel() == xlabel
         assert ax.get_ylabel() == ylabel
 
-    @pytest.mark.parametrize("vert", [True, False])
     def test_boxplot_group_xlabel_ylabel(self, vert):
         df = DataFrame(
             {
@@ -365,7 +373,7 @@ def test_boxplot_group_xlabel_ylabel(self, vert):
             }
         )
         xlabel, ylabel = "x", "y"
-        ax = df.boxplot(by="group", vert=vert, xlabel=xlabel, ylabel=ylabel)
+        ax = df.boxplot(by="group", xlabel=xlabel, ylabel=ylabel, **vert)
         for subplot in ax:
             assert subplot.get_xlabel() == xlabel
             assert subplot.get_ylabel() == ylabel