Don't clear Spines and Axis twice in Axes.__init__.

QuLogic · QuLogic · commit 6dbcaf1e8114 · 2017-05-16T01:30:36.000-04:00
Both these classes have called their own .cla() method in their
.__init__() method, so don't call it again in Axes.cla() if doing
Axes.__init__().
diff --git a/lib/matplotlib/axes/_base.py b/lib/matplotlib/axes/_base.py
@@ -479,6 +479,7 @@ def __init__(self, fig, rect,
         """ % {'scale': ' | '.join(
             [repr(x) for x in mscale.get_scale_names()])}
         martist.Artist.__init__(self)
+        self._in_init = True
         if isinstance(rect, mtransforms.Bbox):
             self._position = rect
         else:
@@ -576,6 +577,8 @@ def __init__(self, fig, rect,
             right=rcParams['ytick.right'] and rcParams['ytick.major.right'],
             which='major')
 
+        self._in_init = False
+
     def __getstate__(self):
         # The renderer should be re-created by the figure, and then cached at
         # that point.
@@ -965,10 +968,13 @@ def cla(self):
         xaxis_visible = self.xaxis.get_visible()
         yaxis_visible = self.yaxis.get_visible()
 
-        self.xaxis.cla()
-        self.yaxis.cla()
-        for name, spine in six.iteritems(self.spines):
-            spine.cla()
+        # Don't clear during __init__ because they're already been cleared by
+        # their own __init__.
+        if not self._in_init:
+            self.xaxis.cla()
+            self.yaxis.cla()
+            for name, spine in six.iteritems(self.spines):
+                spine.cla()
 
         self.ignore_existing_data_limits = True
         self.callbacks = cbook.CallbackRegistry()
