Status: Valid
Owner: ----
CC: [email protected]
Labels: Type-Defect Priority-Medium Polynomial
New issue 3778 by [email protected]: AGCA objects are not picklable
http://code.google.com/p/sympy/issues/detail?id=3778
In [14]: pickle.dumps(QQ[x, y].ideal(1 - x))
---------------------------------------------------------------------------
PicklingError Traceback (most recent call last)
<ipython-input-14-3b65e03ebb2b> in <module>()
----> 1 pickle .dumps (QQ [x ,y ].ideal (Integer (1 )-x ))
/sw/lib/python2.7/pickle.pyc in dumps(obj, protocol)
1372 def dumps(obj, protocol=None):
1373 file = StringIO()
-> 1374 Pickler(file, protocol).dump(obj)
1375 return file.getvalue()
1376
/sw/lib/python2.7/pickle.pyc in dump(self, obj)
222 if self.proto >= 2:
223 self.write(PROTO + chr(self.proto))
--> 224 self.save(obj)
225 self.write(STOP)
226
/sw/lib/python2.7/pickle.pyc in save(self, obj)
329
330 # Save the reduce() output and finally memoize the object
--> 331 self.save_reduce(obj=obj, *rv)
332
333 def persistent_id(self, obj):
/sw/lib/python2.7/pickle.pyc in save_reduce(self, func, args, state,
listitems, dictitems, obj)
417
418 if state is not None:
--> 419 save(state)
420 write(BUILD)
421
/sw/lib/python2.7/pickle.pyc in save(self, obj)
284 f = self.dispatch.get(t)
285 if f:
--> 286 f(self, obj) # Call unbound method with explicit self
287 return
288
/sw/lib/python2.7/pickle.pyc in save_dict(self, obj)
647
648 self.memoize(obj)
--> 649 self._batch_setitems(obj.iteritems())
650
651 dispatch[DictionaryType] = save_dict
/sw/lib/python2.7/pickle.pyc in _batch_setitems(self, items)
661 for k, v in items:
662 save(k)
--> 663 save(v)
664 write(SETITEM)
665 return
/sw/lib/python2.7/pickle.pyc in save(self, obj)
329
330 # Save the reduce() output and finally memoize the object
--> 331 self.save_reduce(obj=obj, *rv)
332
333 def persistent_id(self, obj):
/sw/lib/python2.7/pickle.pyc in save_reduce(self, func, args, state,
listitems, dictitems, obj)
417
418 if state is not None:
--> 419 save(state)
420 write(BUILD)
421
/sw/lib/python2.7/pickle.pyc in save(self, obj)
284 f = self.dispatch.get(t)
285 if f:
--> 286 f(self, obj) # Call unbound method with explicit self
287 return
288
/sw/lib/python2.7/pickle.pyc in save_dict(self, obj)
647
648 self.memoize(obj)
--> 649 self._batch_setitems(obj.iteritems())
650
651 dispatch[DictionaryType] = save_dict
/sw/lib/python2.7/pickle.pyc in _batch_setitems(self, items)
661 for k, v in items:
662 save(k)
--> 663 save(v)
664 write(SETITEM)
665 return
/sw/lib/python2.7/pickle.pyc in save(self, obj)
329
330 # Save the reduce() output and finally memoize the object
--> 331 self.save_reduce(obj=obj, *rv)
332
333 def persistent_id(self, obj):
/sw/lib/python2.7/pickle.pyc in save_reduce(self, func, args, state,
listitems, dictitems, obj)
417
418 if state is not None:
--> 419 save(state)
420 write(BUILD)
421
/sw/lib/python2.7/pickle.pyc in save(self, obj)
284 f = self.dispatch.get(t)
285 if f:
--> 286 f(self, obj) # Call unbound method with explicit self
287 return
288
/sw/lib/python2.7/pickle.pyc in save_dict(self, obj)
647
648 self.memoize(obj)
--> 649 self._batch_setitems(obj.iteritems())
650
651 dispatch[DictionaryType] = save_dict
/sw/lib/python2.7/pickle.pyc in _batch_setitems(self, items)
661 for k, v in items:
662 save(k)
--> 663 save(v)
664 write(SETITEM)
665 return
/sw/lib/python2.7/pickle.pyc in save(self, obj)
284 f = self.dispatch.get(t)
285 if f:
--> 286 f(self, obj) # Call unbound method with explicit self
287 return
288
/sw/lib/python2.7/pickle.pyc in save_tuple(self, obj)
560 write(MARK)
561 for element in obj:
--> 562 save(element)
563
564 if id(obj) in memo:
/sw/lib/python2.7/pickle.pyc in save(self, obj)
284 f = self.dispatch.get(t)
285 if f:
--> 286 f(self, obj) # Call unbound method with explicit self
287 return
288
/sw/lib/python2.7/pickle.pyc in save_tuple(self, obj)
560 write(MARK)
561 for element in obj:
--> 562 save(element)
563
564 if id(obj) in memo:
/sw/lib/python2.7/pickle.pyc in save(self, obj)
284 f = self.dispatch.get(t)
285 if f:
--> 286 f(self, obj) # Call unbound method with explicit self
287 return
288
/sw/lib/python2.7/pickle.pyc in save_global(self, obj, name, pack)
746 raise PicklingError(
747 "Can't pickle %r: it's not found as %s.%s" %
--> 748 (obj, module, name))
749 else:
750 if klass is not obj:
PicklingError: Can't pickle <function <lambda> at 0x10cc018c0>: it's not
found as sympy.polys.agca.modules.<lambda>
This makes it impossible to use these objects in SymPy Live.
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