[Python-Dev] speeding up list append calls

Reinhold Birkenfeld reinhold-birkenfeld-nospam at wolke7.net
Wed Sep 14 19:14:39 CEST 2005

Martin v. Löwis wrote:
> Neal Norwitz wrote:
>> This code doesn't really work in general.  It assumes that any append
>> function call is a list method, which is obviously invalid.  But if a
>> variable is known to be a list (ie, local and assigned as list
>> (BUILD_LIST) or a list comprehension), could we do something like this
>> as a peephole optimization?
> Alternatively, couldn't LIST_APPEND check that this really is a list,
> and, if it isn't, fall back to PyObject_CallMethod?

Are there any other optimizations which solely act on the name of a method?
This seems a step too far.


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