make violin's orientation default to vertical

saranti · saranti · commit ae4b510359a2 · 2024-04-20T19:54:15.000+10:00
diff --git a/lib/matplotlib/axes/_axes.py b/lib/matplotlib/axes/_axes.py
@@ -8476,7 +8476,7 @@ def _kde_method(X, coords):
 
     @_api.make_keyword_only("3.9", "vert")
     def violin(self, vpstats, positions=None, vert=None,
-               orientation=None, widths=0.5, showmeans=False,
+               orientation='vertical', widths=0.5, showmeans=False,
                showextrema=True, showmedians=False, side='both'):
         """
         Draw a violin plot from pre-computed statistics.
diff --git a/lib/matplotlib/axes/_axes.pyi b/lib/matplotlib/axes/_axes.pyi
@@ -760,7 +760,7 @@ class Axes(_AxesBase):
         positions: ArrayLike | None = ...,
         *,
         vert: bool | None = ...,
-        orientation: Literal["vertical", "horizontal"] | None = ...,
+        orientation: Literal["vertical", "horizontal"] = ...,
         widths: float | ArrayLike = ...,
         showmeans: bool = ...,
         showextrema: bool = ...,
