From 2a2b90ed3fe7e0cf2e56bd6c1bb798758b6f4d4b 2016-03-02 02:30:04
From: Thomas A Caswell <tcaswell@gmail.com>
Date: 2016-03-02 02:30:04
Subject: [PATCH] FIX: use mpl.get_backend() instead of a global

Use `matplotlib.get_backend()` to look up the current backend rather
than looking at a module-level golabl in `matplotlib.backends`.

Closes #9286

---

diff --git a/IPython/core/pylabtools.py b/IPython/core/pylabtools.py
index 6528178..a4a8450 100644
--- a/IPython/core/pylabtools.py
+++ b/IPython/core/pylabtools.py
@@ -211,7 +211,7 @@ def select_figure_formats(shell, formats, **kwargs):
 
     [ f.pop(Figure, None) for f in shell.display_formatter.formatters.values() ]
 
-    if matplotlib.backends.backend.lower() == 'nbagg':
+    if matplotlib.get_backend().lower() == 'nbagg':
         formatter = shell.display_formatter.ipython_display_formatter
         formatter.for_type(Figure, _reshow_nbagg_figure)