Update to use print_function in all library Python files -- whether they actually use the print function or not.

Author: mdboom

lib/matplotlib/_cm.py

@@ -4,6 +4,7 @@
 
 """
 
+from __future__ import print_function
 import numpy as np
 
 _binary_data = {

lib/matplotlib/_mathtext_data.py

@@ -13,6 +13,7 @@
 for charcode, glyphind in items:
     print charcode, glyphind
 """
+from __future__ import print_function
 
 latex_to_bakoma = {
     r'\oint'                     : ('cmex10',  45),

lib/matplotlib/axes.py

@@ -1,4 +1,4 @@
-from __future__ import division, generators
+from __future__ import division, print_function
 import math, sys, warnings, datetime
 from operator import itemgetter
 import itertools

lib/matplotlib/backend_bases.py

@@ -1,4 +1,3 @@
-
 """
 Abstract base classes define the primitives that renderers and
 graphics contexts must implement to serve as a matplotlib backend

lib/matplotlib/backends/__init__.py

@@ -1,4 +1,4 @@
-
+from __future__ import print_function
 import matplotlib
 import inspect
 import warnings

lib/matplotlib/backends/backend_fltkagg.py

@@ -8,7 +8,7 @@
 
 """
 
-from __future__ import division
+from __future__ import division, print_function
 
 import os, sys, math
 

lib/matplotlib/backends/backend_gdk.py

@@ -1,4 +1,4 @@
-from __future__ import division
+from __future__ import division, print_function
 
 import math
 import os

lib/matplotlib/backends/backend_macosx.py

@@ -1,4 +1,4 @@
-from __future__ import division
+from __future__ import division, print_function
 
 import os
 import numpy

lib/matplotlib/backends/backend_mixed.py

@@ -1,3 +1,4 @@
+from __future__ import print_function
 from matplotlib._image import frombuffer
 from matplotlib.backends.backend_agg import RendererAgg
 from matplotlib.tight_bbox import process_figure_for_rasterizing

lib/matplotlib/backends/backend_pdf.py

@@ -1,4 +1,5 @@
 # -*- coding: iso-8859-1 -*-
+
 """
 A PDF matplotlib backend (not yet complete)
 Author: Jouni K Seppänen <jks@iki.fi>