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bpo-38858: Small integer per interpreter by vstinner · Pull Request #17315 · python/cpython

vstinner

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Each Python subinterpreter now has its own "small integer
singletons": numbers in [-5; 257] range.

It is no longer possible to change the number of small integers at
build time by overriding NSMALLNEGINTS and NSMALLPOSINTS macros:
macros should now be modified manually in pycore_pystate.h header
file.

For now, continue to share _PyLong_Zero and _PyLong_One singletons
between all subinterpreters.

vstinner merged commit 630c8df into python:master

Dec 17, 2019

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vstinner deleted the vstinner:small_ints2 branch

Dec 17, 2019

sthagen added a commit to sthagen/cpython that referenced this pull request

Dec 17, 2019