Description:
python-numpy package cannot be imported because it asks for
libgfortran.so.3, whereas gcc-libs package provides libgfortran.so.4


Additional info:
* package version(s): python-numpy 1.12.1-1, gcc-libs 7.1.1-2

Steps to reproduce:
1. install the above packages
2. start python and try to import numpy:

% python
Python 3.6.1 (default, Mar 27 2017, 00:27:06)
[GCC 6.3.1 20170306] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy
Traceback (most recent call last):
File "/usr/lib/python3.6/site-packages/numpy/core/__init__.py", line 16, in <module>
from . import multiarray
ImportError: libgfortran.so.3: cannot open shared object file: No such file or directory
[...]

% pacman -Ql gcc-libs | grep libgfortran
gcc-libs /usr/lib/libgfortran.so
gcc-libs /usr/lib/libgfortran.so.4
gcc-libs /usr/lib/libgfortran.so.4.0.0

(BTW, python2-numpy seems to suffer from similar problem)