[SciPy-user] import scipy mangles types
Pearu Peterson
pearu at scipy.org
Thu Apr 22 13:06:31 CDT 2004
On Thu, 22 Apr 2004, John Hunter wrote:
> Here's an interesting bug.
>
> from Matrix import Matrix
> import scipy
> Matrix([1,2,3])
>
> produces the traceback
> Traceback (most recent call last):
> File "<stdin>", line 1, in ?
> File "/usr/local/lib/python2.3/site-packages/Numeric/Matrix.py", line 69, in __init__
> if type(data) is types.StringType:
> AttributeError: 'NoneType' object has no attribute 'StringType'
>
> The types module (used by Matrix) is being replaced by None if scipy
> is imported after Matrix.
Strange, scipy import should not need to touch types at all..
> If I import scipy before I import Matrix, I have no troubles
>
> import scipy
> from Matrix import Matrix
> Matrix([1,2,3])
>
> This is a CVS scipy, circa Feb 10 2004. Haven't checked against 0.3.
That is very old scipy. Anyway, with the recent CVS there are no troubles:
>>> from Matrix import Matrix
>>> import scipy
>>> Matrix([1,2,3])
Matrix([ [1, 2, 3]])
Pearu
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