On 2015-02-11 12:15, Marc Mezzarobba wrote:
also that the cost of issuing a Python method call when constructing
elements is significant, what is the best approach to deal with it?

If you *really* need a fast _element_constructor_ method, then the only way is to use Cython.

However, I wonder why you insist on using parent._element_constructor_(). You could for example have a fast ElementClass.__init__() or a fast non-method function construct_foo_element().

why are so many parents Cython classes if there are no benefits?
For rings, parents are generally Python objects...

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