Adjusted docstring to follow numpydoc

williamjameshandley · williamjameshandley · commit 220ca16ed913 · 2018-03-26T06:18:46.000+01:00
diff --git a/lib/matplotlib/widgets.py b/lib/matplotlib/widgets.py
@@ -310,9 +310,8 @@ def __init__(self, ax, label, valmin, valmax, valinit=0.5, valfmt='%1.2f',
         valstep : float, optional, default: None
             If given, the slider will snap to multiples of `valstep`.
 
-        orientation : str, optional, default: 'horizontal'
-            'horizontal' : horizontal slider
-            'vertical'   : vertical slider
+        orientation : {'horizontal', 'vertical'}
+            The orientation of the slider.
 
         Notes
         -----
@@ -329,7 +328,7 @@ def __init__(self, ax, label, valmin, valmax, valinit=0.5, valfmt='%1.2f',
         if slidermax is not None and not hasattr(slidermax, 'val'):
             raise ValueError("Argument slidermax ({}) has no 'val'"
                              .format(type(slidermax)))
-        if orientation not in ['horizontal', 'vertical']:
+        if orientation not in {'horizontal', 'vertical'}:
             raise ValueError("Argument orientation ({}) must be either"
                              "'horizontal' or 'vertical'".format(orientation))
 
