Issue 1198: pickle does not work for Function
http://code.google.com/p/sympy/issues/detail?id=1198
New issue report by [EMAIL PROTECTED]:
Following code -
import pickle
from sympy import *
v = (x,y,z) = symbols('x','y','z')
f = Function('f')(*v)
print f
print pickle.dumps(f)
Produces output -
f(x, y, z)
Traceback (most recent call last):
File "pickletest.py", line 14, in <module>
print pickle.dumps(f)
File "/usr/lib/python2.5/pickle.py", line 1366, in dumps
Pickler(file, protocol).dump(obj)
File "/usr/lib/python2.5/pickle.py", line 224, in dump
self.save(obj)
File "/usr/lib/python2.5/pickle.py", line 331, in save
self.save_reduce(obj=obj, *rv)
File "/usr/lib/python2.5/pickle.py", line 401, in save_reduce
save(args)
File "/usr/lib/python2.5/pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "/usr/lib/python2.5/pickle.py", line 562, in save_tuple
save(element)
File "/usr/lib/python2.5/pickle.py", line 295, in save
self.save_global(obj)
File "/usr/lib/python2.5/pickle.py", line 748, in save_global
(obj, module, name))
pickle.PicklingError: Can't pickle f: it's not found as
sympy.core.function.f
pickle not working for Function!
Issue attributes:
Status: Accepted
Owner: [EMAIL PROTECTED]
Labels: Type-Defect Priority-Medium
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