gh-139888: Add PyTupleWriter C API#139891

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python:mainfrom

vstinner:tuplewriter

Commits on Oct 10, 2025

gh-139888: Add PyTupleWriter C API
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Add AddSteal() and AddArray() functions
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86d529b
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Fix refleak in PySequence_Tuple()
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Hard deprecate _PyTuple_Resize()
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Optimize _PyTupleWriter_SetSize()
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Add test on PyTupleWriter_Create(-2)
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Fix compiler warning
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_PyTupleWriter_Create() doesn't need to copy small_tuple
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Fix assertion
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Fix leak in PyTupleWriter_Discard()
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Commits on Oct 11, 2025

Accept NULL in Add() and AddSteal()
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Use PyTupleWriter in multiple functions
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Update What's New
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Commits on Oct 12, 2025

Convert genericalias _Py_make_parameters() to writer
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Optimize allocation
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Overallocate by 50%
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Revert _tkinter._flatten()
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Commits on Oct 16, 2025

Fix comment
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