[Python-ideas] Copy-on-write when forking a python process

[Antoine Pitrou]

On Wed, 13 Apr 2011 10:06:27 -0400
Mike Graham <mikegraham at gmail.com> wrote:

> On Wed, Apr 13, 2011 at 7:58 AM, Antoine Pitrou <solipsis at pitrou.net> wrote:
> > On Tue, 12 Apr 2011 23:40:02 -0400
> > Terry Reedy <tjreedy at udel.edu> wrote:
> >> "Changed in version 2.3: Interned strings are not immortal (like they
> >> used to be in Python 2.2 and before); you must keep a reference to the
> >> return value of intern() around to benefit from it."
> >
> > That's a rather strange sentence, because interned strings *are*
> > immortal (until the interpreter is shutdown).
> >
> > Regards
> >
> > Antoine.
> 
> Python 2.6.5 (r265:79063, Apr 16 2010, 13:09:56)
> [GCC 4.4.3] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
> >>> x = intern("asdfqqqq")
> >>> id(x)
> 3078566112L
> >>> id("asdfqqqq")
> 3078566112L
> >>> x = []
> >>> y = []
> >>> id("asdfqqqq")
> 3078566208L
> 
> 
> Does not this suggest otherwise?

Oops. It looks like *I* have been mistaken, then. Sorry.

Regards

Antoine.