Problem with import root_numpy

[vlisovsk]

Hello, I have the ROOT 5.34/34 installed some time ago from Homebrew. Now I need to install the root_numpy. I do it via
pip install root_numpy
Then I try to import root_numpy in python and get this error:

import root_numpy
Traceback (most recent call last):
File "", line 1, in
File "/usr/local/Cellar/root/5.34.34_1/lib/root/ROOT.py", line 352, in _importhook
return _orig_ihook( name, *args, **kwds )
File "/usr/local/lib/python2.7/site-packages/root_numpy/init.py", line 51, in
from ._tree import (
File "/usr/local/Cellar/root/5.34.34_1/lib/root/ROOT.py", line 352, in _importhook
return _orig_ihook( name, *args, **kwds )
File "/usr/local/lib/python2.7/site-packages/root_numpy/_tree.py", line 6, in
from . import _librootnumpy
File "/usr/local/Cellar/root/5.34.34_1/lib/root/ROOT.py", line 352, in _importhook
return _orig_ihook( name, *args, **kwds )
File "root_numpy/src/setup.pxi", line 5, in init _librootnumpy (root_numpy/src/_librootnumpy.cpp:5)
File "init.pxd", line 989, in numpy.import_array (root_numpy/src/_librootnumpy.cpp:989)
ImportError: numpy.core.multiarray failed to import

At the same time, import ROOT works fine.
I checked that numpy is latest version 1.12.1 and even reinstalled it again, import numpy works fine.
Python has version 2.7.11.
Does anyone has an idea how to solve this issue?

[kratsg]

Please update your numpy installation:

pip install --upgrade numpy

Your numpy version is too old and does not contain the numpy.core.multiarray library.

@ndawe - we should probably add a min-version requirement?

[vlisovsk]

When I do pip install --upgrade numpy, it says

Requirement already up-to-date: numpy in /usr/local/lib/python2.7/site-packages

I also tried pip install numpy --upgrade --ignore-installed but importing root_numpy still does not work.

Upd:
Also, if i type in python import numpy.core.multiarray, this gives no error. But importing root_numpy still does not work.

[kratsg]

Try:

pip uninstall numpy root_numpy

and then

pip install --upgrade --ignore-installed --no-cache-dir numpy root_numpy

[vlisovsk]

Thanks a lot, it seems this solved the issue!

[ndawe]

Thanks @kratsg! Fast response as usual...