fix NoneType error test failure

kidkoder432 · kidkoder432 · commit b1d8b51bb0c6 · 2023-08-11T18:16:11.000-07:00
Sometimes the `medianprops` dict was not provided so the previous code was failing to assign a key to it. So a check was added to either modify an exsisting dict or create a new one.
diff --git a/lib/matplotlib/axes/_axes.py b/lib/matplotlib/axes/_axes.py
@@ -4147,7 +4147,11 @@ def bxp(self, bxpstats, positions=None, widths=None, vert=True,
         --------
         .. plot:: gallery/statistics/bxp.py
         """
-        medianprops["solid_capstyle"] = "butt"  # Clamp median line to edge of box
+        if medianprops is None: # Clamp median line to edge of box
+            medianprops = {"solid_capstyle": "butt"}  
+        else:
+            medianprops["solid_capstyle"] = "butt"  
+            
         # lists of artists to be output
         whiskers = []
         caps = []
