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gh-145855: Remove the DELETE_ATTR bytecode #146216

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gh-145855: Remove the DELETE_ATTR bytecode #146216

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85ac67a
Remove the DELETE_ATTR bytecode
aisk Mar 20, 2026
f8b62dc
Remove the unnecessary SWAP(2)
aisk Mar 20, 2026
5076f39
Update PYC_MAGIC_NUMBER
aisk Mar 20, 2026
703af8f
📜🤖 Added by blurb_it.
blurb-it[bot] Mar 20, 2026
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11 changes: 0 additions & 11 deletions Doc/library/dis.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -1076,17 +1076,6 @@ iterations of the loop.
where *namei* is the index of name in :attr:`~codeobject.co_names` of the
:ref:`code object <code-objects>`.

.. opcode:: DELETE_ATTR (namei)

Implements::

obj = STACK.pop()
del obj.name

where *namei* is the index of name into :attr:`~codeobject.co_names` of the
:ref:`code object <code-objects>`.


.. opcode:: STORE_GLOBAL (namei)

Works as :opcode:`STORE_NAME`, but stores the name as a global.
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3 changes: 2 additions & 1 deletion Include/internal/pycore_magic_number.h
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Expand Up @@ -293,6 +293,7 @@ Known values:
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 3663 (Remove DELETE_ATTR opcode)
Python 3.16 will start with 3700
Expand All @@ -306,7 +307,7 @@ PC/launcher.c must also be updated.
*/

#define PYC_MAGIC_NUMBER 3662
#define PYC_MAGIC_NUMBER 3663
/* This is equivalent to converting PYC_MAGIC_NUMBER to 2 bytes
(little-endian) and then appending b'\r\n'. */
#define PYC_MAGIC_NUMBER_TOKEN \
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10 changes: 2 additions & 8 deletions Include/internal/pycore_opcode_metadata.h
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