GH-145667: Merge GET_ITER and GET_YIELD_FROM_ITER#146120
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markshannon wants to merge 3 commits intopython:mainfrom
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GH-145667: Merge GET_ITER and GET_YIELD_FROM_ITER#146120markshannon wants to merge 3 commits intopython:mainfrom
GET_ITER and GET_YIELD_FROM_ITER#146120markshannon wants to merge 3 commits intopython:mainfrom
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…more like FOR_ITER
markshannon
requested review from
Fidget-Spinner,
ericsnowcurrently,
iritkatriel,
pablogsal,
savannahostrowski and
tomasr8
as code owners
diegorusso
approved these changes
Mar 20, 2026
| Python 3.15a4 3660 (Change generator preamble code) | ||
| Python 3.15a4 3661 (Lazy imports IMPORT_NAME opcode changes) | ||
| Python 3.15a6 3662 (Add counter to RESUME) | ||
| Python 3.15a8 3662 (Add counter to RESUME) |
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why did you change the alpha number?
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Also modifies
SENDto make it a bit more like FOR_ITER as both are now fed byGET_ITER.Apart from saving an opcode, this will enable broadly similar optimizations to be applied to
SENDas are already applied toFOR_ITER. Which will be able to:yield from seqwhereseqis a common iterable, likelist.SENDas it will be mostly specialized.For now, this is broadly performance neutral, between +0% and -1%, mostly about 0%.
GET_ITERandGET_YIELD_FROM_ITERinstructions #145667