FIX: implement __ne__ for SubplotSpec

tacaswell · QuLogic · commit ed7d353a7e8c · 2017-02-02T18:39:59.000-05:00
In python3 `__ne__` automatically delegates to `__eq__`, in python2 it
does not and falls back to the default `__ne__` test.  The NumPy
version of `assert_equal` actually checks `if a != b: raise`, whereas the
version of `assert_equal` from `unittest` (where `nose` ultimately
pulls from) checks `if not a == b: raise`
diff --git a/lib/matplotlib/gridspec.py b/lib/matplotlib/gridspec.py
@@ -453,7 +453,6 @@ def get_position(self, fig, return_all=False):
         else:
             return figbox
 
-
     def get_topmost_subplotspec(self):
         'get the topmost SubplotSpec instance associated with the subplot'
         gridspec = self.get_gridspec()
@@ -473,6 +472,10 @@ def __eq__(self, other):
                     self.num1 == other.num1,
                     self.num2 == other.num2))
 
+    if six.PY2:
+        def __ne__(self, other):
+            return not self == other
+
     def __hash__(self):
         return (hash(self._gridspec) ^
                 hash(self.num1) ^
