[Python-Dev] RFC: Add a new builtin strarray type to Python? (original) (raw)

Larry Hastings larry at hastings.org
Sat Oct 1 23:36:01 CEST 2011

On 10/01/2011 09:06 PM, Victor Stinner wrote:

Another alternative is a "string-join" object. It is discussed (and implemented) in the following issue, and PyPy has also an optional implementation:

http://bugs.python.org/issue1569040 http://codespeak.net/pypy/dist/pypy/doc/interpreter-optimizations.html#string- join-objects

Yes, actually I was planning on trying to revive my "lazy string concatenation" patch once PEP 393 landed. As I recall it, the major roadblock to the patch's acceptance was that it changed the semantics of PyString_AS_STRING(). With the patch applied, PyString_AS_STRING() could now fail and return NULL under low-memory conditions. This meant a major change to the C API and would have required an audit of 400+ call sites inside CPython alone. I haven't studied PEP 393 yet, but Martin tells me PyUnicode_READY would be a good place to render the lazy string.

Give me a week or two and I should be able to get it together,

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