Merge pull request matplotlib#28133 from anntzer/saxkw

Make `functions` param to secondary_x/yaxis not keyword-only.

Author: QuLogic

galleries/users_explain/quick_start.py

@@ -497,7 +497,7 @@ def my_plotter(ax, data1, data2, param_dict):
 
 ax3.plot(t, s)
 ax3.set_xlabel('Angle [rad]')
-ax4 = ax3.secondary_xaxis('top', functions=(np.rad2deg, np.deg2rad))
+ax4 = ax3.secondary_xaxis('top', (np.rad2deg, np.deg2rad))
 ax4.set_xlabel('Angle [°]')
 
 # %%

lib/matplotlib/axes/_axes.py

@@ -570,7 +570,7 @@ def indicate_inset_zoom(self, inset_ax, **kwargs):
         return self.indicate_inset(rect, inset_ax, **kwargs)
 
     @_docstring.dedent_interpd
-    def secondary_xaxis(self, location, *, functions=None, transform=None, **kwargs):
+    def secondary_xaxis(self, location, functions=None, *, transform=None, **kwargs):
         """
         Add a second x-axis to this `~.axes.Axes`.
 
@@ -624,7 +624,7 @@ def invert(x):
         return secondary_ax
 
     @_docstring.dedent_interpd
-    def secondary_yaxis(self, location, *, functions=None, transform=None, **kwargs):
+    def secondary_yaxis(self, location, functions=None, *, transform=None, **kwargs):
         """
         Add a second y-axis to this `~.axes.Axes`.
 

lib/matplotlib/axes/_axes.pyi

@@ -88,24 +88,24 @@ class Axes(_AxesBase):
     def secondary_xaxis(
         self,
         location: Literal["top", "bottom"] | float,
-        *,
         functions: tuple[
             Callable[[ArrayLike], ArrayLike], Callable[[ArrayLike], ArrayLike]
         ]
         | Transform
         | None = ...,
+        *,
         transform: Transform | None = ...,
         **kwargs
     ) -> SecondaryAxis: ...
     def secondary_yaxis(
         self,
         location: Literal["left", "right"] | float,
-        *,
         functions: tuple[
             Callable[[ArrayLike], ArrayLike], Callable[[ArrayLike], ArrayLike]
         ]
         | Transform
         | None = ...,
+        *,
         transform: Transform | None = ...,
         **kwargs
     ) -> SecondaryAxis: ...