I don't know if this will help but the change is that each instance stores some (unbound) method objects. In the previous release these were stored in the class object but it turns out that isn't right wrt inheritance. I haven't much experience with pickling but I will try adding a pickle test to my test suite and see if I can figure this out. -----Original Message----- From: numpy-discussion-admin@lists.sourceforge.net [mailto:numpy-discussion-admin@lists.sourceforge.net]On Behalf Of Tavis Rudd Sent: Friday, March 23, 2001 7:28 PM To: numpy-discussion@lists.sourceforge.net Subject: [Numpy-discussion] possible bug: pickling MaskedArrays with the latest cvs version of MA Hi, I'm having difficulty pickling with the new implementation of activeattributes in the cvs version of MA. With the standard pickle module I get the this traceback:

...

...

import MA a = MA.arange(3400) fp = open('a.pickle','w') from pickle import dump, load dump(a,fp) Traceback (most recent call last): File "<stdin>", line 1, in ? File "/usr/local/lib/python2.1/pickle.py", line 932, in dump Pickler(file, bin).dump(object) File "/usr/local/lib/python2.1/pickle.py", line 109, in dump self.save(object) File "/usr/local/lib/python2.1/pickle.py", line 211, in save f(self, object) File "/usr/local/lib/python2.1/pickle.py", line 471, in save_inst getstate = object.__getstate__ File "/usr/local/lib/python2.1/site-packages/MA/activeattr.py", line 39, in __getattr__ return d['_get'](self, name) File "/usr/local/lib/python2.1/site-packages/MA/activeattr.py", line 80, in basic_get return self.__dict__[name] KeyError: __getstate__

With the cPickle module I'm getting:

...

...

from cPickle import dump, load dump(a,file) Traceback (most recent call last): File "<stdin>", line 1, in ? cPickle.UnpickleableError: Cannot pickle <type 'instance method'> objects

This is with python 2.1b1 and the latest cvs version of Numeric. Has anyone else had this problem? Tavis _______________________________________________ Numpy-discussion mailing list Numpy-discussion@lists.sourceforge.net http://lists.sourceforge.net/lists/listinfo/numpy-discussion

I don't know if this will help but the change is that each instance stores some (unbound) method objects. In the previous release these were stored in the class object but it turns out that isn't right wrt inheritance. I haven't much experience with pickling but I will try adding a pickle test to my test suite and see if I can figure this out. -----Original Message----- From: numpy-discussion-admin@lists.sourceforge.net [mailto:numpy-discussion-admin@lists.sourceforge.net]On Behalf Of Tavis Rudd Sent: Friday, March 23, 2001 7:28 PM To: numpy-discussion@lists.sourceforge.net Subject: [Numpy-discussion] possible bug: pickling MaskedArrays with the latest cvs version of MA Hi, I'm having difficulty pickling with the new implementation of activeattributes in the cvs version of MA. With the standard pickle module I get the this traceback:

...

...

import MA a = MA.arange(3400) fp = open('a.pickle','w') from pickle import dump, load dump(a,fp) Traceback (most recent call last): File "<stdin>", line 1, in ? File "/usr/local/lib/python2.1/pickle.py", line 932, in dump Pickler(file, bin).dump(object) File "/usr/local/lib/python2.1/pickle.py", line 109, in dump self.save(object) File "/usr/local/lib/python2.1/pickle.py", line 211, in save f(self, object) File "/usr/local/lib/python2.1/pickle.py", line 471, in save_inst getstate = object.__getstate__ File "/usr/local/lib/python2.1/site-packages/MA/activeattr.py", line 39, in __getattr__ return d['_get'](self, name) File "/usr/local/lib/python2.1/site-packages/MA/activeattr.py", line 80, in basic_get return self.__dict__[name] KeyError: __getstate__

With the cPickle module I'm getting:

...

...

from cPickle import dump, load dump(a,file) Traceback (most recent call last): File "<stdin>", line 1, in ? cPickle.UnpickleableError: Cannot pickle <type 'instance method'> objects

This is with python 2.1b1 and the latest cvs version of Numeric. Has anyone else had this problem? Tavis _______________________________________________ Numpy-discussion mailing list Numpy-discussion@lists.sourceforge.net http://lists.sourceforge.net/lists/listinfo/numpy-discussion