Re: Python 2.6 Deprecation Warnings with __new__ — Can someone explain why?
tjreedy at udel.edu
Mon Oct 26 17:14:00 CET 2009
Carl Banks wrote:
>> So what is the point of using __new__?
.__new__ creates new objects. It also inializes 'immutable' objects.
> It's mostly for types written in C, or for subclassing types written
> in C.
Specifically, for subclassing immutable classes where one wants
initialization behavior different from that provided by the superclass.
> Advanced programmers can take advantage of it to do some
> interesting things, but most of the time __init__ suffices.
Initialization of mutables should be done in .__init__. Most
user-defined classes define mutables.
Terry Jan Reedy
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