[Numpy-discussion] 1.8.0rc1

Jens Jørgen Mortensen jensj at fysik.dtu.dk
Tue Oct 1 06:00:45 EDT 2013

Den 30-09-2013 17:17, Charles R Harris skrev:
> Hi All,
> NumPy 1.8.0rc1 is up now on sourceforge 
> <http://sourceforge.net/projects/numpy/files/NumPy/1.8.0rc1/> .The 
> binary builds are included except for Python 3.3 on windows, which 
> will arrive later. Many thanks to Ralf for the binaries, and to those 
> who found and fixed the bugs in the last beta. Any remaining bugs are 
> all my fault ;) I hope this will be the last release before final, so 
> please test it thoroughly.

I seems that solve() doesn't like arrays like zeros((3, 0)).  I get this 
with 1.8.0rc1 on Ubuntu 13.04 and Python 2.7.4:

Python 2.7.4 (default, Apr 19 2013, 18:32:33)
[GCC 4.7.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
 >>> import numpy as np
 >>> np
<module 'numpy' from 
 >>> np.linalg.solve(np.eye(3), np.zeros((3, 0)))
Traceback (most recent call last):
   File "<stdin>", line 1, in <module>
   File "/home/jensj/numpy-1.8.0rc1/lib/python/numpy/linalg/linalg.py", 
line 380, in solve
     r = gufunc(a, b, signature=signature, extobj=extobj)
ValueError: cannot remove a zero-sized axis from an iterator

with 1.7.1 it works OK:

 >>> np
<module 'numpy' from '/usr/lib/python2.7/dist-packages/numpy/__init__.pyc'>
 >>> np.linalg.solve(np.eye(3), np.zeros((3, 0)))
array([], shape=(3, 0), dtype=float64)

Jens Jørgen

> Chuck

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