The PEP 649 implementation will require a way to load NotImplementedError
from the bytecode. @markshannon suggested implementing this by converting
LOAD_ASSERTION_ERROR into a more general mechanism for loading constants.

This PR adds this new opcode. I will work on the rest of the implementation
of the PEP separately.

The PEP 649 implementation will require a way to load NotImplementedError
from the bytecode. @markshannon suggested implementing this by converting
LOAD_ASSERTION_ERROR into a more general mechanism for loading constants.

This PR adds this new opcode. I will work on the rest of the implementation
of the PEP separately.

Co-authored-by: Irit Katriel <[email protected]>

but did not actually apply the new magic number.

PR #119321 added a comment about the magic number bump
but did not actually apply the new magic number.

…119864)

…asses

See https://discuss.python.org/t/pep-749-implementing-pep-649/54974/28 and subsequent posts.

… use the dict

…hod (python#119864)

The PEP 649 implementation will require a way to load NotImplementedError
from the bytecode. @markshannon suggested implementing this by converting
LOAD_ASSERTION_ERROR into a more general mechanism for loading constants.

This PR adds this new opcode. I will work on the rest of the implementation
of the PEP separately.

Co-authored-by: Irit Katriel <[email protected]>

PR python#119321 added a comment about the magic number bump
but did not actually apply the new magic number.

…hod (python#119864)

…#131755)

…ormat` (python#131755)

…ormat` (python#131755)

…untime errors

… errors (#133407)

The SC asked that the Appendix in PEP-749 be added to the docs.

The SC asked that the Appendix in PEP-749 be added to the docs.

Co-authored-by: Adam Turner <[email protected]>

The SC asked that the Appendix in PEP-749 be added to the docs.
(cherry picked from commit 3396df5)

Co-authored-by: Jelle Zijlstra <[email protected]>
Co-authored-by: Adam Turner <[email protected]>

gh-119180: Fix values of Format members in docs

…ythonGH-133841)

(cherry picked from commit 0eb448c)

Co-authored-by: Jelle Zijlstra <[email protected]>
pythongh-119180: Fix values of Format members in docs

…3902)

gh-119180: More documentation for PEP 649/749 (GH-133552)

The SC asked that the Appendix in PEP-749 be added to the docs.
(cherry picked from commit 3396df5)

Co-authored-by: Jelle Zijlstra <[email protected]>
Co-authored-by: Adam Turner <[email protected]>

…GH-133841) (#133903)

gh-119180: annotationlib: Fix values of Format members in docs (GH-133841)
(cherry picked from commit 0eb448c)

Co-authored-by: Jelle Zijlstra <[email protected]>

- Mention (again) that `type.__annotations__` is unsafe. It is now safe
  when using only classes defined under PEP 649 semantics, but not with
  classes defined using `from __future__ import annotations`.
- Mention that annotations on instances no longer work. There was already
  an issue about this.
- Mention the general changes in the "Porting to Python 3.14" section.
- `annotationlib` was proposed by PEP-749, not PEP-649.

- Mention (again) that `type.__annotations__` is unsafe. It is now safe
  when using only classes defined under PEP 649 semantics, but not with
  classes defined using `from __future__ import annotations`.
- Mention that annotations on instances no longer work. There was already
  an issue about this.
- Mention the general changes in the "Porting to Python 3.14" section.
- `annotationlib` was proposed by PEP-749, not PEP-649.

Co-authored-by: Emma Smith <[email protected]>
Co-authored-by: Carol Willing <[email protected]>

- Mention (again) that `type.__annotations__` is unsafe. It is now safe
  when using only classes defined under PEP 649 semantics, but not with
  classes defined using `from __future__ import annotations`.
- Mention that annotations on instances no longer work. There was already
  an issue about this.
- Mention the general changes in the "Porting to Python 3.14" section.
- `annotationlib` was proposed by PEP-749, not PEP-649.
(cherry picked from commit 7291eab)

Co-authored-by: Jelle Zijlstra <[email protected]>
Co-authored-by: Emma Smith <[email protected]>
Co-authored-by: Carol Willing <[email protected]>

gh-119180: Updates to PEP 649/749 docs (GH-134640)

- Mention (again) that `type.__annotations__` is unsafe. It is now safe
  when using only classes defined under PEP 649 semantics, but not with
  classes defined using `from __future__ import annotations`.
- Mention that annotations on instances no longer work. There was already
  an issue about this.
- Mention the general changes in the "Porting to Python 3.14" section.
- `annotationlib` was proposed by PEP-749, not PEP-649.
(cherry picked from commit 7291eab)

Co-authored-by: Jelle Zijlstra <[email protected]>
Co-authored-by: Emma Smith <[email protected]>
Co-authored-by: Carol Willing <[email protected]>