[Python-Dev] The Trick

[Kevin Jacobs]

On Sat, 18 Oct 2003, Guido van Rossum wrote:
> I don't like the trick of avoiding the copy if the refcount is one;
> AFAIK it can't be done in Jython.

There is also a problem with the strategy if if gets called by a C
extension.  It is perfectly feasible for a C extension to hold the only
reference to an object, call the copying sort (directly or indirectly), and
then be very surprised that the copy did not take place.

-Kevin

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Kevin Jacobs
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