Address other failures

pandas/plotting/_matplotlib/boxplot.py

@@ -20,6 +20,7 @@
 
 import pandas as pd
 import pandas.core.common as com
+from pandas.util.version import Version
 
 from pandas.io.formats.printing import pprint_thing
 from pandas.plotting._matplotlib.core import (
@@ -54,7 +55,8 @@ def _set_ticklabels(ax: Axes, labels: list[str], is_vertical: bool, **kwargs) ->
     ticks = ax.get_xticks() if is_vertical else ax.get_yticks()
     if len(ticks) != len(labels):
         i, remainder = divmod(len(ticks), len(labels))
-        assert remainder == 0, remainder
+        if Version(mpl.__version__) < Version("3.10"):
+            assert remainder == 0, remainder
         labels *= i
     if is_vertical:
         ax.set_xticklabels(labels, **kwargs)

pandas/tests/plotting/frame/test_frame.py

@@ -1087,6 +1087,7 @@ def test_boxplot_vertical(self, hist_df):
         assert len(ax.lines) == 7 * len(numeric_cols)
 
     @pytest.mark.filterwarnings("ignore:Attempt:UserWarning")
+    @pytest.mark.filterwarnings("ignore:set_ticklabels:UserWarning")
     def test_boxplot_vertical_subplots(self, hist_df):
         df = hist_df
         numeric_cols = df._get_numeric_data().columns

pandas/tests/plotting/test_boxplot_method.py

@@ -1,5 +1,7 @@
 """Test cases for .boxplot method"""
 
+from __future__ import annotations
+
 import itertools
 import string
 
@@ -37,7 +39,7 @@ def _check_ax_limits(col, ax):
 
 
 if Version(mpl.__version__) < Version("3.10"):
-    verts = [{"vert": False}, {"vert": True}]
+    verts: list[dict[str, bool | str]] = [{"vert": False}, {"vert": True}]
 else:
     verts = [{"orientation": "horizontal"}, {"orientation": "vertical"}]
 
@@ -337,6 +339,7 @@ def test_plot_xlabel_ylabel(self, vert):
         assert ax.get_xlabel() == xlabel
         assert ax.get_ylabel() == ylabel
 
+    @pytest.mark.filterwarnings("ignore:set_ticklabels:UserWarning")
     def test_plot_box(self, vert):
         # GH 54941
         rng = np.random.default_rng(2)
@@ -378,7 +381,6 @@ def test_boxplot_group_xlabel_ylabel(self, vert):
             assert subplot.get_xlabel() == xlabel
             assert subplot.get_ylabel() == ylabel
 
-    @pytest.mark.parametrize("vert", [True, False])
     def test_boxplot_group_no_xlabel_ylabel(self, vert):
         df = DataFrame(
             {
@@ -387,9 +389,13 @@ def test_boxplot_group_no_xlabel_ylabel(self, vert):
                 "group": np.random.default_rng(2).choice(["group1", "group2"], 10),
             }
         )
-        ax = df.boxplot(by="group", vert=vert)
+        ax = df.boxplot(by="group", **vert)
         for subplot in ax:
-            target_label = subplot.get_xlabel() if vert else subplot.get_ylabel()
+            target_label = (
+                subplot.get_xlabel()
+                if vert == {"vert": True} or vert == {"orientation": "vertical"}
+                else subplot.get_ylabel()
+            )
             assert target_label == pprint_thing(["group"])