On 2017-08-12 11:14, Volker Braun wrote:
> Caches from @cached_method are pickled by default, but the class can
> opt-out of this. Sometimes this is necessary to make pickling work (not
> every Cython object is pickle-able).

Hmmm....shouldn't the below work then?

sage: class A(SageObject):
....:     @cached_method
....:     def a(self):
....:         print('oo')
....:         return 42
....:
sage: a = A()
sage: a.a()
oo
42
sage: a.a()
42
sage: save(a, 'a.sobj')
sage: b = load('a.sobj')
sage: b.a()  # again "computes" 42
oo
42

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