2to3: Apply print fixer.

Add `print_function` to all `from __future__ import ...` statements
and use the python3 print function syntax everywhere.

Closes #3078.

Author: charris

numpydoc/__init__.py

@@ -1,3 +1,3 @@
-from __future__ import division, absolute_import
+from __future__ import division, absolute_import, print_function
 
 from .numpydoc import setup

numpydoc/comment_eater.py

@@ -1,4 +1,4 @@
-from __future__ import division, absolute_import
+from __future__ import division, absolute_import, print_function
 
 import sys
 if sys.version_info[0] >= 3:

numpydoc/compiler_unparse.py

@@ -10,7 +10,7 @@
     fixme: We may want to move to using _ast trees because the compiler for
            them is about 6 times faster than compiler.compile.
 """
-from __future__ import division, absolute_import
+from __future__ import division, absolute_import, print_function
 
 import sys
 from compiler.ast import Const, Name, Tuple, Div, Mul, Sub, Add

numpydoc/docscrape.py

@@ -1,20 +1,15 @@
 """Extract reference documentation from the NumPy source tree.
 
 """
-from __future__ import division, absolute_import
+from __future__ import division, absolute_import, print_function
 
-import sys
 import inspect
 import textwrap
 import re
 import pydoc
 from warnings import warn
 import collections
 
-if sys.version_info[0] >= 3:
-    from io import StringIO
-else:
-    from io import StringIO
 
 class Reader(object):
     """A line-based string reader.

numpydoc/docscrape_sphinx.py

@@ -1,4 +1,4 @@
-from __future__ import division, absolute_import
+from __future__ import division, absolute_import, print_function
 
 import re, inspect, textwrap, pydoc
 import sphinx

numpydoc/linkcode.py

@@ -9,7 +9,7 @@
     :license: BSD, see LICENSE for details.
 
 """
-from __future__ import division, absolute_import
+from __future__ import division, absolute_import, print_function
 
 import warnings
 import collections

numpydoc/numpydoc.py

@@ -15,7 +15,7 @@
 .. [1] https://github.com/numpy/numpy/blob/master/doc/HOWTO_DOCUMENT.rst.txt
 
 """
-from __future__ import division, absolute_import
+from __future__ import division, absolute_import, print_function
 
 import sphinx
 import collections

numpydoc/phantom_import.py

@@ -14,7 +14,7 @@
 .. [1] http://code.google.com/p/pydocweb
 
 """
-from __future__ import division, absolute_import
+from __future__ import division, absolute_import, print_function
 
 import imp, sys, compiler, types, os, inspect, re
 

numpydoc/plot_directive.py

@@ -74,7 +74,7 @@
   to make them appear side-by-side, or in floats.
 
 """
-from __future__ import division, absolute_import
+from __future__ import division, absolute_import, print_function
 
 import sys, os, glob, shutil, imp, warnings, re, textwrap, traceback
 import sphinx

numpydoc/tests/test_docscrape.py

@@ -1,5 +1,5 @@
 # -*- encoding:utf-8 -*-
-from __future__ import division, absolute_import
+from __future__ import division, absolute_import, print_function
 
 import sys, textwrap