ImportError: numpy.core.multiarray failed to import [Solved]

[Gökhan]

Hi,

I compiled and installed the latest EMAN2.2 from GitHub.

It worked fine after installation, but after rebooting the computer, I started getting:

ImportError: numpy.core.multiarray failed to import
Traceback (most recent call last):
  File "/home/username/EMAN2/bin/e2projectmanager.py", line 33, in <module>
    from EMAN2 import *
  File "/home/username/EMAN2/lib/EMAN2.py", line 44, in <module>
    from EMAN2_cppwrap import *
  File "/home/username/EMAN2/lib/EMAN2_cppwrap.py", line 47, in <module>
    from libpyTypeConverter2 import *
ImportError: numpy.core.multiarray failed to import

Turns out, Miniconda added this into my .bashrc:

# added by Miniconda2 4.3.11 installer
export PATH="/home/tolung/miniconda2/bin:$PATH"

which messed up python, which, in turn, messed up EMAN2.

I just commented out the last line, and EMAN2.2 works again.

I thought I would post it here in case others run into the same issue.

Cheers...

[Steven Ludtke]

Hi Gokhan,

 Which instructions were you following?  I don't think we have any that are based on miniconda? 

We are putting new compilation instructions together now to accompany the 2.2 release, which will focus on an Anaconda-based build, similar to the new binary distributions. However, there are a couple of issues with this strategy, as Anaconda isn't compatible with GCC5, so if you have a GCC5 or 6 based system, you currently still need to use a non-Anaconda approach. The traditional build approach still works fine, but to make use of some of the new capabilities (like the neural-network methods) you need additional dependencies (SciPy and Theano). 

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Steven Ludtke, Ph.D.
Professor, Dept. of Biochemistry and Mol. Biol.                Those who do

Co-Director National Center For Macromolecular Imaging            ARE

Baylor College of Medicine                                     The converse
slu...@bcm.edu  -or-  ste...@alumni.caltech.edu               also applies
http://ncmi.bcm.edu/~stevel

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