[Numpy-discussion] numpy.test(): invalid value encountered in {isinf, divide, power, ...}

[David Cournapeau]

On Fri, Jan 22, 2010 at 12:06 AM, Charles R Harris
<charlesr.harris at gmail.com> wrote:
>
>
> On Thu, Jan 21, 2010 at 3:03 AM, David Cournapeau <cournape at gmail.com>
> wrote:
>>
>> On Thu, Jan 21, 2010 at 6:23 PM, Pauli Virtanen <pav+sp at iki.fi> wrote:
>> > Wed, 20 Jan 2010 16:57:01 -0500, Darren Dale wrote:
>> > [clip]
>> >> Warning: invalid value encountered in isinf Warning: invalid value
>> >> encountered in isfinite
>> > [clip]
>> >
>> > This is because of changed seterr() default values.
>> >
>> > IMHO, the 'print' default is slightly worse than the previous 'ignore'.
>> > Personally, I don't see great value in the "invalid value encountered"
>> > reports that are appear every time a nan is generated...
>>
>> I thought it was agreed that the default would be changed to warnings
>> for 1.5.0 ?
>>
>
> It was. Well, it was agreed that the change shouldn't be made in 1.4 anyway.
> I'm starting to have second thoughts also. Not so much because of the
> messages emitted by the tests, but because I suspect a lot of users will be
> shocked, shocked, when their old applications fill the screen with messages.

Hence changing to warning: it would appear only once per location, and
can be filtered. And filling was what happened before it was changed
by accident so that long ago anyway.

David