[Python-Dev] Keeping interned strings in a set
alexander.belopolsky at gmail.com
Thu Jun 15 23:13:08 CEST 2006
As an exercise in using the new set C API, I've replaced the
"interned" dictionary in stringobject.c with a set. Surprisingly,
what I thought would be a simple exercise, took several hours to
implement and debug. Two problems are worth mentioning:
1. I had to add a function to setobject.h to retrieve a pointer to an
object stored in a set. I could not find a way to do it using current
API (short of iterating through the set of course).
2. I had to change the PyString_Fini() and PySet_Fini() in
Py_Finalize() because cleaning "interned" set cannot be done after the
set module is finalized.
If there is any interest, I will submit a patch, but it does not seem
to affect performance in any meaningful way.
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