Kay Schluehr wrote:

> What happens when an enthusiast re-implements a stdlib module e.g.
> decimal s.t. it becomes a builtin module? Will the stdlib module serve
> as a wrapper to conform the current API or will the builtin module
> conform to the current interface.

Well, the best example is probably the transition from sets.Set to 
__builtin__.set. The API changed but only slightly. So far sets.Set 
retains the old implementation--it is not a wrapper for __builtin__.set.

Future modules may be implemented differently.
-- 
Michael Hoffman
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