> > To solve this, we would have to make the ob_sinterned slot count as a > > reference to the interned string. But then string_dealloc would be > > complicated (it would have to call Py_XDECREF(op->ob_sinterned)), > > possibly slowing things down. > > > > Is this worth it? > > That (latter) change seem "right" regardless of whether interned > strings are ever released. OK, let's do this. > > The fear for unbounded growth of the interned strings table is > > pretty common amongst authors of serious long-running programs. > > I think it is. Unbound growth of interned strings is precisely the > reason why the XML libraries repeatedly came up with their own > interning dictionaries, which only persist for the lifetime of parsing > the document, since the next document may want to intern entirely > different things. This is the reason that the intern() function is bad > to use for most applications. So let's expose a function that cleans out unused strings from the interned dict. Long-running apps can decide when to call this. --Guido van Rossum (home page: http://www.python.org/~guido/)
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