On 04.11.2013 14:30, STINNER Victor wrote:
> 
> It would be simpler to just drop these custom codecs (rot13, bz2, hex, etc.) instead of helping to use them :-)

-1 for the same reasons I keep repeating over and over and over again :-)

The codec system was designed to work obj->obj. Python 3 limits the types
for the bytes/str helper methods, but that limitation does not extend
to the codec design.

+1 on having better error messages. In the long run, we should add
supported input/output type information to codecs, so that error
reporting and codec introspection becomes easier.

-- 
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