[Numpy-discussion] OpenOpt Suite release 0.45

Dmitrey tmp50@ukr....
Sat Mar 16 05:36:10 CDT 2013




--- Исходное сообщение ---
От кого: "Matthieu Brucher" <matthieu.brucher@gmail.com>
Дата: 16 марта 2013, 11:33:39

Hi,

Different objects can have the same hash, so it compares to find the
actual correct object.
Usually when you store something in a dict and later you can't find
it anymore, it is that the internal state changed and that the hash
is not the same anymore.


my objects (oofuns) definitely have different __hash__() results - it's
just integers 1,2,3 etc assigned to the oofuns (stored in oofun._id
field) when they are created.

D.



Matthieu


2013/3/16 Dmitrey <tmp50@ukr.net>



--- Исходное сообщение ---
От кого: "Alan G Isaac" <alan.isaac@gmail.com>
Дата: 15 марта 2013, 22:54:21

On 3/15/2013 3:34 PM, Dmitrey wrote:
> the suspected bugs are not documented yet


I'm going to guess that the state of the F_i changes
when you use them as keys (i.e., when you call __le__.    

no, their state doesn't change for operations like __le__ . AFAIK
searching Python dict doesn't calls __le__ on the object keys at
all, it operates with method .__hash__(), and latter returns
fixed integer numbers assigned to the objects earlier (at least
in my case).


 It is very hard to imagine that this is a Python or NumPy bug.

Cheers,
Alan

_______________________________________________
NumPy-Discussion mailing list      NumPy-Discussion@scipy.org            http://mail.scipy.org/mailman/listinfo/numpy-discussion          


_______________________________________________
NumPy-Discussion mailing list
NumPy-Discussion@scipy.org
http://mail.scipy.org/mailman/listinfo/numpy-discussion




--
Information System Engineer, Ph.D.
Blog: http://matt.eifelle.com
LinkedIn: http://www.linkedin.com/in/matthieubrucher
Music band: http://liliejay.com/

_______________________________________________
NumPy-Discussion mailing list  NumPy-Discussion@scipy.org    http://mail.scipy.org/mailman/listinfo/numpy-discussion  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.scipy.org/pipermail/numpy-discussion/attachments/20130316/4d945872/attachment.html 


More information about the NumPy-Discussion mailing list