ImportError: numpy.core.multiarray failed to import

[volcano63]

$ python -c 'import numpy; print(numpy.__file__)'

/usr/local/lib/python2.7/dist-packages/numpy/__init__.pyc

$ pip show numpy

Name: numpy

You could have used

Output:
$ python3 -c 'import numpy; print(numpy.__file__)'
$ pip3 show numpy 

(The latter if you have pip3 installed as distinct package - which you should have)

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PS You have the right version of numpy installed - you just try to invoke it with the wrong version of Python