I'd like the following to work (in a Cython file):
from sage.misc.cachefunc import cached_method
from sage.rings.arith import factor
cdef class A:
@cached_method
def expensive(self):
return factor(10^5000 + 41)
Currently it fails since the type of a def method on a cython class is
<type 'builtin_function_or_method'>, and such methods have no
func_defaults attribute, which is used in sage.misc.function_mangling.
How hard would it be to get cached_methods working for Cython files?
David
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