2to3: Use absolute imports.

The new import `absolute_import` is added the `from __future__ import`
statement and The 2to3 `import` fixer is run to make the imports
compatible. There are several things that need to be dealt with to make
this work.

1) Files meant to be run as scripts run in a different environment than
files imported as part of a package, and so changes to those files need
to be skipped. The affected script files are:

    * all setup.py files
    * numpy/core/code_generators/generate_umath.py
    * numpy/core/code_generators/generate_numpy_api.py
    * numpy/core/code_generators/generate_ufunc_api.py

2) Some imported modules are not available as they are created during
the build process and consequently 2to3 is unable to handle them
correctly. Files that import those modules need a bit of extra work.
The affected files are:

    * core/__init__.py,
    * core/numeric.py,
    * core/_internal.py,
    * core/arrayprint.py,
    * core/fromnumeric.py,
    * numpy/__init__.py,
    * lib/npyio.py,
    * lib/function_base.py,
    * fft/fftpack.py,
    * random/__init__.py

Closes #3172

1 files changed, 2 insertions, 2 deletions

diff --git a/numpy/distutils/unixccompiler.py b/numpy/distutils/unixccompiler.py
index 837ce5092..2825a899b 100644
--- a/numpy/distutils/unixccompiler.py
+++ b/numpy/distutils/unixccompiler.py
@@ -2,7 +2,7 @@
 unixccompiler - can handle very long argument lists for ar.
 
 """
-from __future__ import division
+from __future__ import division, absolute_import
 
 import os
 
@@ -12,7 +12,7 @@ from numpy.distutils.ccompiler import replace_method
 from numpy.distutils.compat import get_exception
 
 if sys.version_info[0] < 3:
-    import log
+    from . import log
 else:
     from numpy.distutils import log