[Numpy-discussion] small suggestion for numpy.testing utils

Darren Dale dsdale24@gmail....
Sun Feb 22 14:38:21 CST 2009


On Sun, Feb 22, 2009 at 3:22 PM, Darren Dale <dsdale24@gmail.com> wrote:

> On Sun, Feb 22, 2009 at 3:17 PM, Darren Dale <dsdale24@gmail.com> wrote:
>
>> Hello,
>>
>> I am using numpy's assert_array_equal and assert_array_almost_equal to
>> unit test my physical quantities package. I made a single minor change to
>> assert_array_compare that I think might make these functions more useful to
>> ndarray subclasses, and thought maybe they could be useful to numpy itself.
>> I tried applying this diff to numpy and running the test suite, and instead
>> of 9 known failures I got 1 known failure, 11 skips, 2 errors and 2
>> failures. Perhaps it is possible that by not forcing the input arrays to be
>> ndarray instances, some additional numpy features are exposed.
>>
>> Thanks,
>> Darren
>>
>> $ svn diff
>> Index: numpy/testing/utils.py
>> ===================================================================
>> --- numpy/testing/utils.py      (revision 6370)
>> +++ numpy/testing/utils.py      (working copy)
>> @@ -240,9 +240,9 @@
>>
>>  def assert_array_compare(comparison, x, y, err_msg='', verbose=True,
>>                           header=''):
>> -    from numpy.core import asarray, isnan, any
>> -    x = asarray(x)
>> -    y = asarray(y)
>> +    from numpy.core import array, isnan, any
>> +    x = array(x, copy=False, subok=True)
>> +    y = array(y, copy=False, subok=True)
>>
>>      def isnumber(x):
>>          return x.dtype.char in '?bhilqpBHILQPfdgFDG'
>>
>
> Actually, my svn checkout was not up to date. With this patch applied, I
> get 1 known failure and 11 skips.
>
>
I just double checked and I think I get the same results running the svn
6456 test suite with and without this patch applied. I tried posting an
enhancement request at the trac website, but I cant file the ticket because
I get "500 Internal Server Error", so I'm posting it here.
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