NumPy and Python 3 - Error message on import

Question

Importing NumPy in Python 3, I get the following error message:

>>> import numpy
/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/site-packages/numpy/random/__init__.py:91: RuntimeWarning: numpy.ndarray size changed, may indicate binary incompatibility
  from .mtrand import *
>>>

However, numpy is imported after that (e.g. I can call dir(numpy) to list its contents)

a) What does this message mean?

b) Since I am new to NumPy: Can you suggest a test for me to make sure NumPy is functioning properly?

Andrew Gorcester · Accepted Answer · 2012-04-23 16:43:55Z

1

I found this bug report which seems to say that the warning is not important. It looks like the bug report was marked as fixed, so future version of NumPy will not display the warning.

answered Apr 23, 2012 at 16:43

Andrew Gorcester

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OmnipotentEntity · Accepted Answer · 2012-04-23 16:43:39Z

1

According to this bug report, it's a non-issue: http://projects.scipy.org/numpy/ticket/2103

And the warning has been fixed in git.

answered Apr 23, 2012 at 16:43

OmnipotentEntity

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