Why not BDWGC?

[Fredrik Lundh]

LuciferLeo at gmail.com wrote:

> I've heard that the reason why python uses reference counting rather
> than tracing collector is because python cannot determine the root set
> for its various C extensions.
> But provided that BDWGC(full name: Boehm-Demers-Weiser conservative
> garbage collector) is conservative --- can be used for C, and
> opensourced, why python not adopt it as its gcmodule?

google has the answer:

    http://groups.google.com/groups?q=Boehm-Demers+Python

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