[Python-Dev] __dir__, part 2

Fredrik Lundh fredrik at pythonware.com
Fri Nov 10 21:25:02 CET 2006

Thomas Heller wrote:

>>> No objection on targetting 2.6 if other developers agree. Seems this
>>> is well under way. good work!
>> given that dir() is used extensively by introspection tools, I'm
>> not sure I'm positive to a __dir__ that *overrides* the standard
>> dir() behaviour.  *adding* to the default dir() list is okay, re- 
>> placing it is a lot more questionable.
> One part that *I* would like about a complete overridable __dir__ implementation
> is that it would be nice to customize what help(something) prints.

I don't think you should confuse reliable introspection with the help 
system, though.  introspection is used for a lot more than implementing 


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