2to3: Put `from __future__ import division in every python file.

This should be harmless, as we already are division clean. However,
placement of this import takes some care. In the future a script
can be used to append new features without worry, at least until
such time as it exceeds a single line. Having that ability will
make it easier to deal with absolute imports and printing updates.

doc/cdoc/numpyfilter.py

@@ -6,6 +6,8 @@
 Also, add Doxygen /** and /**< syntax automatically where appropriate.
 
 """
+from __future__ import division
+
 import sys
 import re
 import os

doc/cython/run_test.py

@@ -1,3 +1,5 @@
 #!/usr/bin/env python
+from __future__ import division
+
 from numpyx import test
 test()

doc/cython/setup.py

@@ -3,7 +3,9 @@
 
 Note: Cython is the successor project to Pyrex.  For more information, see
 http://cython.org.
+
 """
+from __future__ import division
 
 from distutils.core import setup
 from distutils.extension import Extension

doc/example.py

@@ -8,6 +8,8 @@
 a line by itself, preferably preceeded by a blank line.
 
 """
+from __future__ import division
+
 import os # standard library imports first
 
 # Do NOT import using *, e.g. from numpy import *

doc/newdtype_example/example.py

@@ -1,3 +1,5 @@
+from __future__ import division
+
 import floatint.floatint as ff
 import numpy as np
 

doc/newdtype_example/floatint/__init__.py

@@ -0,0 +1,3 @@
+from __future__ import division
+
+

doc/newdtype_example/setup.py

@@ -1,3 +1,4 @@
+from __future__ import division
 
 from numpy.distutils.core import setup
 

doc/numpybook/comparison/ctypes/filter.py

@@ -1,3 +1,5 @@
+from __future__ import division
+
 __all__ = ['filter2d']
 
 import numpy as N

doc/numpybook/comparison/ctypes/interface.py

@@ -1,3 +1,5 @@
+from __future__ import division
+
 __all__ = ['add', 'filter2d']
 
 import numpy as N

doc/numpybook/comparison/pyrex/setup.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+from __future__ import division
 
 from distutils.core import setup
 from distutils.extension import Extension

doc/numpybook/comparison/timing.py

@@ -1,3 +1,4 @@
+from __future__ import division
 
 import timeit
 

doc/numpybook/comparison/weave/filter.py

@@ -1,3 +1,5 @@
+from __future__ import division
+
 from scipy import weave, zeros_like
 
 def filter(a):

doc/numpybook/comparison/weave/inline.py

@@ -1,3 +1,5 @@
+from __future__ import division
+
 from scipy import weave
 from numpy import rand, zeros_like
 

doc/numpybook/runcode.py

@@ -1,17 +1,20 @@
-# This script takes a lyx file and runs the python code in it.
-#  Then rewrites the lyx file again.
-#
-# Each section of code portion is assumed to be in the same namespace
-# where a from numpy import * has been applied
-#
-#  If a PYNEW inside a Note is encountered, the name space is restarted
-#
-# The output (if any) is replaced in the file
-#  by the output produced during the code run.
-#
-# Options:
-#   -n name of code section  (default MyCode)
-#
+"""
+This script takes a lyx file and runs the python code in it.
+ Then rewrites the lyx file again.
+
+Each section of code portion is assumed to be in the same namespace
+where a from numpy import * has been applied
+
+ If a PYNEW inside a Note is encountered, the name space is restarted
+
+The output (if any) is replaced in the file
+ by the output produced during the code run.
+
+Options:
+  -n name of code section  (default MyCode)
+
+"""
+from __future__ import division
 
 import sys
 import optparse

doc/postprocess.py

@@ -6,6 +6,8 @@
 MODE is either 'html' or 'tex'.
 
 """
+from __future__ import division
+
 import re, optparse
 
 def main():

doc/pyrex/run_test.py

@@ -1,3 +1,5 @@
 #!/usr/bin/env python
+from __future__ import division
+
 from numpyx import test
 test()

doc/pyrex/setup.py

@@ -10,7 +10,9 @@
 For more details, see:
 http://www.scipy.org/Cookbook/Pyrex_and_NumPy
 http://www.scipy.org/Cookbook/ArrayStruct_and_Pyrex
+
 """
+from __future__ import division
 
 from distutils.core import setup
 from distutils.extension import Extension

doc/source/conf.py

@@ -1,4 +1,5 @@
 # -*- coding: utf-8 -*-
+from __future__ import division
 
 import sys, os, re
 

doc/sphinxext/numpydoc/comment_eater.py

@@ -1,3 +1,5 @@
+from __future__ import division
+
 import sys
 if sys.version_info[0] >= 3:
     from io import StringIO

doc/sphinxext/numpydoc/compiler_unparse.py

@@ -10,6 +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
 
 import sys
 from compiler.ast import Const, Name, Tuple, Div, Mul, Sub, Add

doc/sphinxext/numpydoc/docscrape.py

@@ -1,6 +1,7 @@
 """Extract reference documentation from the NumPy source tree.
 
 """
+from __future__ import division
 
 import sys
 import inspect

doc/sphinxext/numpydoc/docscrape_sphinx.py

@@ -1,3 +1,5 @@
+from __future__ import division
+
 import re, inspect, textwrap, pydoc
 import sphinx
 import collections

doc/sphinxext/numpydoc/linkcode.py

@@ -7,7 +7,9 @@
 
     :copyright: Copyright 2007-2011 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
+
 """
+from __future__ import division
 
 import warnings
 import collections

doc/sphinxext/numpydoc/numpydoc.py

@@ -15,6 +15,7 @@
 .. [1] https://github.com/numpy/numpy/blob/master/doc/HOWTO_DOCUMENT.rst.txt
 
 """
+from __future__ import division
 
 import sphinx
 import collections

doc/sphinxext/numpydoc/phantom_import.py

@@ -14,6 +14,8 @@
 .. [1] http://code.google.com/p/pydocweb
 
 """
+from __future__ import division
+
 import imp, sys, compiler, types, os, inspect, re
 
 def setup(app):

doc/sphinxext/numpydoc/plot_directive.py

@@ -74,6 +74,7 @@
   to make them appear side-by-side, or in floats.
 
 """
+from __future__ import division
 
 import sys, os, glob, shutil, imp, warnings, re, textwrap, traceback
 import sphinx
@@ -99,7 +100,7 @@ def setup(app):
     setup.app = app
     setup.config = app.config
     setup.confdir = app.confdir
-    
+
     app.add_config_value('plot_pre_code', '', True)
     app.add_config_value('plot_include_source', False, True)
     app.add_config_value('plot_formats', ['png', 'hires.png', 'pdf'], True)

doc/sphinxext/numpydoc/tests/test_docscrape.py

@@ -1,4 +1,5 @@
 # -*- encoding:utf-8 -*-
+from __future__ import division
 
 import sys, textwrap
 

doc/sphinxext/numpydoc/traitsdoc.py

@@ -13,6 +13,7 @@
 .. [2] http://code.enthought.com/projects/traits/
 
 """
+from __future__ import division
 
 import inspect
 import os

doc/sphinxext/setup.py

@@ -1,3 +1,5 @@
+from __future__ import division
+
 import setuptools
 from distutils.core import setup
 

doc/summarize.py

@@ -5,6 +5,7 @@
 Show a summary about which Numpy functions are documented and which are not.
 
 """
+from __future__ import division
 
 import os, glob, re, sys, inspect, optparse
 import collections

doc/swig/test/setup.py

@@ -1,4 +1,5 @@
 #! /usr/bin/env python
+from __future__ import division
 
 # System imports
 from distutils.core import *

doc/swig/test/testArray.py

@@ -1,4 +1,5 @@
 #! /usr/bin/env python
+from __future__ import division
 
 # System imports
 from   distutils.util import get_platform

doc/swig/test/testFarray.py

@@ -1,4 +1,5 @@
 #! /usr/bin/env python
+from __future__ import division
 
 # System imports
 from   distutils.util import get_platform

doc/swig/test/testFortran.py

@@ -1,4 +1,5 @@
 #! /usr/bin/env python
+from __future__ import division
 
 # System imports
 from   distutils.util import get_platform

doc/swig/test/testMatrix.py

@@ -1,4 +1,5 @@
 #! /usr/bin/env python
+from __future__ import division
 
 # System imports
 from   distutils.util import get_platform

doc/swig/test/testTensor.py

@@ -1,4 +1,5 @@
 #! /usr/bin/env python
+from __future__ import division
 
 # System imports
 from   distutils.util import get_platform

doc/swig/test/testVector.py

@@ -1,4 +1,5 @@
 #! /usr/bin/env python
+from __future__ import division
 
 # System imports
 from   distutils.util import get_platform

numpy/__init__.py

@@ -104,6 +104,7 @@
 Exceptions to this rule are documented.
 
 """
+from __future__ import division
 
 # We first need to detect if we're being called as part of the numpy setup
 # procedure itself in a reliable manner.

numpy/_import_tools.py

@@ -1,3 +1,5 @@
+from __future__ import division
+
 import os
 import sys
 

numpy/add_newdocs.py

@@ -1,10 +1,14 @@
-# This is only meant to add docs to objects defined in C-extension modules.
-# The purpose is to allow easier editing of the docstrings without
-# requiring a re-compile.
+"""
+This is only meant to add docs to objects defined in C-extension modules.
+The purpose is to allow easier editing of the docstrings without
+requiring a re-compile.
 
-# NOTE: Many of the methods of ndarray have corresponding functions.
-#       If you update these docstrings, please keep also the ones in
-#       core/fromnumeric.py, core/defmatrix.py up-to-date.
+NOTE: Many of the methods of ndarray have corresponding functions.
+      If you update these docstrings, please keep also the ones in
+      core/fromnumeric.py, core/defmatrix.py up-to-date.
+
+"""
+from __future__ import division
 
 from numpy.lib import add_newdoc
 

numpy/build_utils/__init__.py

@@ -0,0 +1 @@
+from __future__ import division

numpy/build_utils/common.py

@@ -1,3 +1,5 @@
+from __future__ import division
+
 import sys
 import copy
 import binascii

numpy/build_utils/waf.py

@@ -1,3 +1,5 @@
+from __future__ import division
+
 import os
 import re
 

numpy/compat/__init__.py

@@ -8,6 +8,8 @@
   * we may only need a small subset of the copied library/module
 
 """
+from __future__ import division
+
 import _inspect
 import py3k
 from _inspect import getargspec, formatargspec

numpy/compat/_inspect.py

@@ -3,7 +3,9 @@
 We use this instead of upstream because upstream inspect is slow to import, and
 significanly contributes to numpy import times. Importing this copy has almost
 no overhead.
+
 """
+from __future__ import division
 
 import types
 

numpy/compat/py3k.py

@@ -2,6 +2,7 @@
 Python 3 compatibility tools.
 
 """
+from __future__ import division
 
 __all__ = ['bytes', 'asbytes', 'isfileobj', 'getexception', 'strchar',
            'unicode', 'asunicode', 'asbytes_nested', 'asunicode_nested',

numpy/compat/setup.py

@@ -1,4 +1,6 @@
 #!/usr/bin/env python
+from __future__ import division
+
 
 def configuration(parent_package='',top_path=None):
     from numpy.distutils.misc_util import Configuration

numpy/core/__init__.py

@@ -1,3 +1,4 @@
+from __future__ import division
 
 from info import __doc__
 from numpy.version import version as __version__

numpy/core/_internal.py

@@ -1,5 +1,10 @@
-#A place for code to be called from C-code
-#  that implements more complicated stuff.
+"""
+A place for code to be called from core C-code.
+
+Some things are more easily handled Python.
+
+"""
+from __future__ import division
 
 import re
 import sys