Trapping numeric operators

[John Dell'Aquila]

The lambda wrapper does impose the overhead of an extra function call:
    classdict[magicName] = (
        lambda self, other=None, name=magicName, op=op, fn=fn:
        fn(self, other, name, op)
        )

I could eliminate that by stubbing out the closure and inserting the
code block directly into it:
    stub = lambda self, other=None, name=magicName, op=op: self
    stub.func_code = fn.func_code
    classdict[magicName] = stub

What do folks think -- useful trick or too squirrelly to countenance?