Error when importing Numpy

asked 2019-10-11 15:35:14 +0100

EulerIsAPimp
1 ●1 ●1 ●1

I'm running the most recent version of Sage via the terminal in OS 10.14.6. When importing numpy I get the following error,

sage: import numpy
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-1-d4cdadb62aa7> in <module>()
----> 1 import numpy

/Applications/SageMath/local/lib/python2.7/site-packages/numpy/__init__.py in <module>()
    140     from . import _distributor_init
    141 
--> 142     from . import core
    143     from .core import *
    144     from . import compat

/Applications/SageMath/local/lib/python2.7/site-packages/numpy/core/__init__.py in <module>()
     65         "numpy in {}. One method of fixing this is to repeatedly uninstall "
     66         "numpy until none is found, then reinstall this version.")
---> 67     raise ImportError(msg.format(path))
     68 
     69 from . import numerictypes as nt

ImportError: Something is wrong with the numpy installation. While importing we detected an older version of numpy in ['/Applications/SageMath/local/lib/python2.7/site-packages/numpy']. One method of fixing this is to repeatedly uninstall numpy until none is found, then reinstall this version.

I've tried repeatedly uninstalling as suggested using pip. However, this did not resolve the issue. The pip uninstall didn't seem to touch the numpy installation mentioned in the error.

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My numpy is located similarly:

sage: import numpy
sage: numpy
<module 'numpy' from '/usr/lib/python2.7/site-packages/numpy/__init__.pyc'>

Please look inside the core folder, where the error appears. I see the following lines:

if not (hasattr(multiarray, '_multiarray_umath') and
        hasattr(umath, '_multiarray_umath')):
    import sys
    path = sys.modules['numpy'].__path__
    msg = ("Something is wrong with the numpy installation. "
        "While importing we detected an older version of "
        "numpy in {}. One method of fixing this is to repeatedly uninstall "
        "numpy until none ...

(Code truncated.) Some lines before there are some hints what to do in your case.

dan_fulea ( 2019-10-16 12:56:05 +0100 )edit

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They should not be doing anything with pip related to numpy in Sage. The Numpy package is an "spkg" managed by Sage's build system, and should not be messed around with using pip. It's hard to say what the real problem here is, but I suspect something to do with the user's environment; PYTHONPATH or something related.

Iguananaut ( 2019-11-05 15:04:18 +0100 )edit

Error when importing Numpy

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