From 5766c9f150c6229a5dad9eff740e6bf547fad61d Mon Sep 17 00:00:00 2001
From: Jody Klymak <jklymak@gmail.com>
Date: Wed, 21 Mar 2018 10:00:25 -0700
Subject: [PATCH] FIX: ioerror font cache, second try

---
 lib/matplotlib/font_manager.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/matplotlib/font_manager.py b/lib/matplotlib/font_manager.py
index 02cbd9633fcd..af32e8484535 100644
--- a/lib/matplotlib/font_manager.py
+++ b/lib/matplotlib/font_manager.py
@@ -909,7 +909,7 @@ def json_dump(data, filename):
         try:
             json.dump(data, fh, cls=JSONEncoder, indent=2)
         except OSError as e:
-            warnings.warn('Could not save font_manager cache ', e)
+            warnings.warn('Could not save font_manager cache {}'.format(e))
 
 
 def json_load(filename):