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bpo-42197: Don't create f_locals dictionary unless we actually need it. #32055

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Merged
markshannon merged 14 commits into from
Mar 25, 2022
Merged

bpo-42197: Don't create f_locals dictionary unless we actually need it. #32055

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62be414
`PyFrame_FastToLocalsWithError` and `PyFrame_LocalsToFast` are no lon…
markshannon Mar 22, 2022
d775a87
Fix formatting of news item.
markshannon Mar 22, 2022
4bc0707
Make accesses to a frame's `f_locals` safe from C code, not relying o…
markshannon Mar 23, 2022
4cf7efa
Remove unnecessary check for CO_NEWLOCALS flag.
markshannon Mar 23, 2022
d41f7ea
Remove empty line
markshannon Mar 23, 2022
723f354
Update 'what's new'
markshannon Mar 23, 2022
02f061a
Use nicer formatting
markshannon Mar 23, 2022
281305b
Fix formatting
markshannon Mar 23, 2022
8d3c911
Update Misc/NEWS.d/next/Core and Builtins/2022-03-22-15-12-28.bpo-421…
markshannon Mar 23, 2022
56aa001
Merge branch 'main' into dont-call-fasttolocals-all-the-time
markshannon Mar 23, 2022
0e452a1
Document new `PyFrame_GetLocals` C-API function.
markshannon Mar 23, 2022
65a7904
Fix up docs.
markshannon Mar 25, 2022
c017590
Make sure that modification to frame.f_locals outside of trace functi…
markshannon Mar 25, 2022
70a5717
Add whatsnew section for debugger access to f_locals.
markshannon Mar 25, 2022
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Add whatsnew section for debugger access to f_locals.
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@markshannon
markshannon committed Mar 25, 2022
commit 70a57177589f0485f5628bfdb1fc3d316cd471cd
6 changes: 6 additions & 0 deletions Doc/whatsnew/3.11.rst
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Expand Up @@ -978,6 +978,12 @@ Porting to Python 3.11
computed lazily. The :c:func:`PyFrame_GetBack` function must be called
instead.

Debuggers that accessed the ``f_locals`` directly *must* call
`:c:func:`PyFrame_GetLocals` instead. They no longer need to call
`:c:func:`PyFrame_FastToLocalsWithError` or :c:func:`PyFrame_LocalsToFast`,
in fact they should not call those functions. The necessary updating of the
frame is now managed by the virtual machine.

Code defining ``PyFrame_GetCode()`` on Python 3.8 and older::

#if PY_VERSION_HEX < 0x030900B1
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