John Machin wrote:
> Injecting a "private" method into a particular instance is not much more
> complicated:
>
> >>> def own(self, arg):
> ... print "own"
> ... self.ozz = arg
> ...
> >>> p = K()
> >>> import types
> >>> p.metho = types.MethodType(own, p)
> >>> p.metho("plugh")
> own
> >>> p.ozz
> 'plugh'
> >>> o = K()
> >>> o.metho("xyzzy")
> Traceback (most recent call last):
> File "<stdin>", line 1, in ?
> AttributeError: 'K' object has no attribute 'metho'
> >>>
>
> and no __makeyoureyesbleed__ __doubleunderscoremessingabout__ required :-)
=)
But of course you have to import a module instead. I'm not a huge fan of
the types module because it's generally unnecessary, and I'm not
particularly afraid of double-underscores as I write a lot of __init__
methods. ;-)
To the OP: regardless of which solution you eventually go with, it's
definitely worth understanding how descriptors_ work. New-style classes
wouldn't work without them.
.. _descriptors: http://users.rcn.com/python/download/Descriptor.htm
STeVe
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