[Python-Dev] INPLACE_ADD and INPLACE_MULTIPLY oddities in ceval.c (original) (raw)

Guido van Rossum guido at python.org
Thu Mar 30 06:24:55 CEST 2006

On 3/29/06, Greg Ewing <greg.ewing at canterbury.ac.nz> wrote:

Tim Hochberg wrote:

> Still, perhaps for Py3K it's worth considering > if PyNumberInplaceAdd should only call iadd and add, not > radd. Thus giving the target object complete control during inplace > adds. That's probably reasonable, although it would break the conceptual notion that a += b is equivalent to a = a + b when a can't be modified in-place.

No, it's not reasonable, because this would fail:

x = 5 x += 0.5

-- --Guido van Rossum (home page: http://www.python.org/~guido/)

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