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Tue Jun 19 22:53:09 CEST 2007 · https://mail.python.org/pipermail/python-dev/2007-June/073671.html

>> What would a registry of tranformation algorithms buy us compared to a
>> module with transformation functions?
> 
> Easier registering of custom transformations. Without a registry, you'd have
> to monkey-patch a module.

Or users would have to invoke the module directly.

I think a convention would be enough:

rot13.encode(foo)
rot13.decode(bar)

Then, "registration" would require to put the module on sys.path,
which it would for any other kind of registry as well.

My main objection to using an encoding is that for these,
the algorithm name will *always* be a string literal,
completely unlike "real" codecs, where the encoding name
often comes from the environment (either from the process
environment, or from some kind of input).

Regards,
Martin

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