On 10/25/2010 12:56 PM, John Nagle wrote:
On 10/25/2010 7:38 AM, Tim Chase wrote:
While a dirty hack for which I'd tend to smack anybody who used it...you
*can* assign to instance.__class__
That's an implementation detail of CPython. May not work in
IronPython, Unladen Swallow, PyPy, or Shed Skin.
Curious by your claim, could you confirm this someplace in the
docs? From my reading of [1]'s "If x is an instance of a
new-style class, then type(x) is typically the same as
x.__class__ (although this is not guaranteed - a new-style class
instance is permitted to override the value returned for
x.__class__)" is that this can be overridden (the definition of
"overridden" however may mean different things to different
people) and [2] refers to "__class__ assignment works only if
both classes have the same __slots__" (that seems pretty clear
that __class__ assignment is permissible)
-tkc
[1]
http://docs.python.org/reference/datamodel.html#new-style-and-classic-classes
[2]
http://docs.python.org/reference/datamodel.html#__slots__
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