gh-139871: Add `bytearray.take_bytes([n])` to efficiently extract `bytes`#140128

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cmaloney:bytearray_bytes

Nov 13, 2025

Commits on Oct 14, 2025

gh-139871: Update bytearray to contain PyBytesObject
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Commits on Oct 15, 2025

Add bytearray.take_bytes
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Merge branch 'main' into bytearray_bytes
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Update Objects/bytearrayobject.c
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Review fixes
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Merge branch 'main' into bytearray_bytes
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Commits on Oct 17, 2025

Update Objects/bytearrayobject.c
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Commits on Oct 18, 2025

Add tests around alloc and getsizeof that show clearing isn't working which is resulting in threading failure
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Fix resizing to 0 length / clearing leaving one byte alloc
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review fix: handle NULL return from from PyBytes_FromStringAndSize
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Add take_bytes to test_free_threading
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Missed line...
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Simplify getting out ob_bytes
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Include PyBytesObject in __alloc__ of bytearray.
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Commits on Oct 27, 2025

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Don't multiply by sizeof(char) as it's always 1
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Rely on bytes for end of buffer NULL
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Personal review fixes
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Simplify resize error handling
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Use right PyLong constructor
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Commits on Oct 29, 2025

Add a define for max bytearray size, comment size=0
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Remove oold comment
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Update test_capi.test_bytearray for MemoryError vs OverflowError
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More accurate size and alloc calculation
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Comment and minor doc tweaks
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Remove _PyByteArray_empty_string, add bytearray_reinit_from_bytes
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Update Stable API concerns: restore _empty_string an dmove _PyBytesObject_SIZE
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Restore _PyByteArray_empty_string in .c file
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remove line that shouldn't have been added
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Commits on Oct 30, 2025

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Remove original variable, no longer used
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remove _PyByteArray_empty_string
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Add take_bytes_n free-threading test
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Commits on Oct 31, 2025

Expand comment for ob_alloc
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Add note on memmove tradeoff
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Move suggested optimizing refactors to whatsnew
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Remove unintended change
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Commits on Nov 4, 2025

Fix intermittent failure on deallocation from uninitialized memory
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PEP 7
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Tweak comment
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Commits on Nov 7, 2025

Add +1 so allocation is over max byte length
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Minor tweak for flow in whatsnew entry
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Apply suggestions from code review
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Commits on Nov 13, 2025

Merge branch 'main' into bytearray_bytes
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