matplotlib
diff --git a/‎lib/matplotlib/backend_bases.py‎
Lines changed: 3 additions & 1 deletion b/‎lib/matplotlib/backend_bases.py‎
Lines changed: 3 additions & 1 deletion
@@ -1394,14 +1394,16 @@ def __init__(self, name, canvas, x, y, button=None, key=None,
         (*x*, *y*) in figure coords ((0, 0) = bottom left)
         button pressed None, 1, 2, 3, 'up', 'down'
         """
-        LocationEvent.__init__(self, name, canvas, x, y, guiEvent=guiEvent)
         if button in MouseButton.__members__.values():
             button = MouseButton(button)
         self.button = button
         self.key = key
         self.step = step
         self.dblclick = dblclick
 
+        LocationEvent.__init__(self, name, canvas, x, y, guiEvent=guiEvent)
+
+
     def __str__(self):
         return (f"{self.name}: "
                 f"xy=({self.x}, {self.y}) xydata=({self.xdata}, {self.ydata}) "