Hi again,
here is a minimal example of the problem that has nothing to do with
my original classes, apparently a cached_method in a base category
cannot be called from a method in the derived category:
sage: class A:
....: @cached_method
....: def foo(self):
....: print("A.foo")
....:
sage: class B(A):
....: def Afoo(self):
....: A.foo(self)
....:
sage: E = B()
sage: E.foo()
B.foo
sage: E.Afoo()
ERROR: An unexpected error occurred while tokenizing input
The following traceback may be corrupted or invalid
The error message is: ('EOF in multi-line statement', (396, 0))
---------------------------------------------------------------------------
TypeError Traceback (most recent call
last)
/Users/javier/<ipython console> in <module>()
/Users/javier/<ipython console> in Afoo(self)
/Applications/sage/local/lib/python2.6/site-packages/sage/misc/
cachefunc.pyc in __call__(self, *args, **kwds)
553 return self.cache[k]
554 except KeyError:
--> 555 w =
self._cachedmethod._instance_call(self._instance, *args, **kwds)
556 self.cache[k] = w
557 return w
/Applications/sage/local/lib/python2.6/site-packages/sage/misc/
cachefunc.pyc in _instance_call(self, inst, *args, **kwds)
776
777 """
--> 778 return self._cachedfunc.f(inst, *args, **kwds)
779
780 def _get_instance_cache(self, inst):
TypeError: foo() takes exactly 1 argument (2 given)
Is this a bug or a feature?
Cheers,
Javier
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