python / cpython

* Move trace-info to thread state.

* Correct output for pdb when turning on tracing in middle of line

* Specialize LOAD_ATTR with  LOAD_ATTR_SLOT and LOAD_ATTR_SPLIT_KEYS

* Move dict-common.h to internal/pycore_dict.h

* Add LOAD_ATTR_WITH_HINT specialized opcode.

* Quicken in function if loopy

* Specialize LOAD_ATTR for module attributes.

* Add specialization stats

…soft keywords (GH-26630)

Replace it with Windows tab for Shell and Editor options
and Shell/Ed for options exclusive to one of them.

Create room for more options and make dialog shorter,
to better fit small windows.

This is the same fix as for PyFrame_LocalsToFast() in gh-26609, but applied to PyFrame_FastToLocalsWithError(). (It should have been in that PR.)

https://bugs.python.org/issue43693

Move the check for missing named flags in flag aliases from Flag creation
to a new *verify* decorator.

…g in syntax errors (GH-26611)

…-25466)

Emit a deprecation warning if the numeric literal is immediately followed by
one of keywords: and, else, for, if, in, is, or. Raise a syntax error with
more informative message if it is immediately followed by other keyword or
identifier.

Automerge-Triggered-By: GH:pablogsal

This was reverted in GH-26596 (commit 6d518bb) due to some bad memory accesses.

* Add the MAKE_CELL opcode. (gh-26396)

The memory accesses have been fixed.

https://bugs.python.org/issue43693

…H-26593)

These are the settings that extend the help menu.  Moving them shortens the dialog and will help with it being too tall for small screens.

… set (GH-26608)

…anager (GH-26604)

Co-authored-by: Ken Jin <28750310+Fidget-Spinner@users.noreply.github.com>

Call SQLite API's first, and return early in case of error. At the end,
allocate the object and initialise members. We now avoid unneeded
alloc/dealloc's in case the statement creation fails.

…s offsets. (gh-26396)" (GH-26597)

This reverts commit 631f993.

…ntax errors (GH-26589)

GH-26493)" (GH-26596)

This reverts commit f3fa63e as is
causing crashes in some Windows tests in the buildbots.

from imports

They are slow and raise too many false positive, I'm in the slow
process to try to change this.

…H-26582)

The plan is to eventually make PyCodeObject opaque in the public C-API, with the full struct moved to Include/internal/pycore_code.h. _PyLocalsPlusKinds and _PyLocalsPlusKind started off there but were needed on PyCodeObject, hence the duplication. This led to warnings with some compilers. (Apparently it does not trigger a warning on my install of GCC.)

This change eliminates the superfluous typedef.

https://bugs.python.org/issue43693

…s. (gh-26396)

This moves logic out of the frame initialization code and into the compiler and eval loop.  Doing so simplifies the runtime code and allows us to optimize it better.

https://bugs.python.org/issue43693

Relative imports do not work when running test_x as main.

… precision time source (GH-26568)

These were reverted in gh-26530 (commit 17c4edc) due to refleaks.

* 2c1e258 - Compute deref offsets in compiler (gh-25152)
* b2bf2bc - Add new internal code objects fields: co_fastlocalnames and co_fastlocalkinds. (gh-26388)

This change fixes the refleaks.

https://bugs.python.org/issue43693

* Add co_firstinstr field to code object.

* Implement barebones quickening.

* Use non-quickened bytecode when tracing.

* Add NEWS item

* Add new file to Windows build.

* Don't specialize instructions with EXTENDED_ARG.

…H-26422)

* bpo-44258: support PEP 515 for Fraction's initialization from string

* regexps's version

* A different regexps version, which doesn't suffer from catastrophic backtracking

* revert denom -> den

* strip "_" from the decimal str, add few tests

* drop redundant tests

* Add versionchanged & whatsnew entry

* Amend Fraction constructor docs

* Change .. versionchanged:...

#22659)

* `ensurepip` now uses `importlib.resources.files()` traversable APIs

* Update Lib/ensurepip/__init__.py

Co-authored-by: Jason R. Coombs <jaraco@jaraco.com>

* Update Misc/NEWS.d/next/Library/2020-10-11-20-23-48.bpo-37449.f-t3V6.rst

Co-authored-by: Jason R. Coombs <jaraco@jaraco.com>

Co-authored-by: Jason R. Coombs <jaraco@jaraco.com>