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seberg and methane bpo-39028: Performance enhancement in keyword extraction (GH-17576) 
All keywords should first be checked for pointer identity. Only
after that failed for all keywords (unlikely) should unicode
equality be used.
The original code would call unicode equality on any non-matching
keyword argument. Meaning calling it often e.g. when a function
has many kwargs but only the last one is provided.
Latest commit 75bb07e Dec 18, 2019
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clinic Shorter docstring (GH-16322) Sep 21, 2019
Python-ast.c closes bpo-38648: Remove double tp_free slot in Python-ast.c. (GH-17002) Oct 31, 2019
README Issue #18093: Factor out the programs that embed the runtime Jul 25, 2014
_warnings.c bpo-38644: Add _PyObject_Call() (GH-17089) Nov 14, 2019
asdl.c replace PY_SIZE_MAX with SIZE_MAX Sep 7, 2016
ast.c bpo-39080: Starred Expression's column offset fix when inside a CALL (G… Dec 18, 2019
ast_opt.c bpo-33416: Add end positions to Python AST (GH-11605) Jan 22, 2019
ast_unparse.c bpo-37050: Remove expr_text from FormattedValue ast node, use Constan… May 27, 2019
bltinmodule.c bpo-38835: Don't use PyFPE_START_PROTECT and PyFPE_END_PROTECT (GH-17231 Nov 20, 2019
bootstrap_hash.c Fix typos in comments, docs and test names (#15018) Jul 30, 2019
ceval.c Produce cleaner bytecode for 'with' and 'async with' by generating se… Nov 21, 2019
ceval_gil.h Revert "bpo-33608: Factor out a private, per-interpreter _Py_AddPendi… Jun 3, 2019
codecs.c bpo-37751: Fix codecs.lookup() normalization (GH-15092) Aug 21, 2019
compile.c bpo-38328: Speed up the creation time of constant list and set displa… Nov 26, 2019
condvar.h Typo fix: "throuhgh" should be "through". (GH-16704) Oct 11, 2019
context.c bpo-38979: fix ContextVar "__class_getitem__" method (GH-17497) Dec 8, 2019
dtoa.c bpo-36262: Fix _Py_dg_strtod() memory leak (goto undfl) (GH-12276) Mar 13, 2019
dup2.c bpo-32150: Expand tabs to spaces in C files. (#4583) Nov 28, 2017
dynamic_annotations.c bpo-32241: Add the const qualifire to declarations of umodifiable str… Dec 12, 2017
dynload_aix.c bpo-37752: Delete redundant Py_CHARMASK in normalizestring() (GH-15095) Sep 10, 2019
dynload_dl.c Issue #24268: Fix import naming when loading extension modules. Patch… May 23, 2015
dynload_hpux.c bpo-36900: Fix compilation on HP-UX (GH-13614) May 28, 2019
dynload_shlib.c bpo-36722: Debug build loads libraries built in release mode (GH-12952) Apr 25, 2019
dynload_stub.c Issue #13959: Re-implement imp.get_suffixes() in Lib/imp.py. May 4, 2012
dynload_win.c bpo-36266: Add module name in ImportError when DLL not found on Windo… Aug 17, 2019
errors.c bpo-38920: Add audit hooks for when sys.excepthook and sys.unraisable… Nov 28, 2019
fileutils.c bpo-38353: Add subfunctions to getpath.c (GH-16572) Oct 4, 2019
formatter_unicode.c Fix typo in formatter_unicode (GH-16831) Oct 25, 2019
frozen.c bpo-36540: PEP 570 -- Implementation (GH-12701) Apr 29, 2019
frozenmain.c bpo-38304: PyConfig_InitPythonConfig() cannot fail anymore (GH-16509) Oct 1, 2019
future.c bpo-34683: Make SyntaxError column offsets consistently 1-indexed (gh… Sep 24, 2018
getargs.c bpo-39028: Performance enhancement in keyword extraction (GH-17576) Dec 18, 2019
getcompiler.c closes bpo-31696: don't mention GCC in sys.version when building with… Oct 6, 2017
getcopyright.c Bump copyright years to 2019. (GH-11404) Jan 2, 2019
getopt.c Delete stale comment in Python/getopt.c. (GH-14719) Aug 20, 2019
getplatform.c bpo-32150: Expand tabs to spaces in C files. (#4583) Nov 28, 2017
getversion.c bpo-32150: Expand tabs to spaces in C files. (#4583) Nov 28, 2017
graminit.c bpo-11410: Standardize and use symbol visibility attributes across PO… Oct 15, 2019
hamt.c Typo fix - implemention should be implementation (GH-16806) Oct 15, 2019
import.c bpo-38858: new_interpreter() reuses pycore_init_builtins() (GH-17351) Nov 22, 2019
importdl.c bpo-36842: Implement PEP 578 (GH-12613) May 23, 2019
importdl.h PEP 489: Multi-phase extension module initialization May 23, 2015
importlib.h Produce cleaner bytecode for 'with' and 'async with' by generating se… Nov 21, 2019
importlib_external.h Produce cleaner bytecode for 'with' and 'async with' by generating se… Nov 21, 2019
importlib_zipimport.h bpo-39033: Fix NameError in zipimport during hash validation (GH-17588) Dec 15, 2019
initconfig.c Add PYTHONUTF8 to commandline usage. (GH-17587) Dec 14, 2019
makeopcodetargets.py makeopcodetargets.py: we need to import Lib/opcode.py Mar 26, 2016
marshal.c bpo-38823: Fix refleak in marshal init error path (GH-17260) Nov 20, 2019
modsupport.c bpo-36381: warn when no PY_SSIZE_T_CLEAN defined (GH-12473) Mar 23, 2019
mysnprintf.c Recorded merge of revisions 81032 via svnmerge from May 9, 2010
mystrtoul.c bpo-37752: Delete redundant Py_CHARMASK in normalizestring() (GH-15095) Sep 10, 2019
opcode_targets.h Produce cleaner bytecode for 'with' and 'async with' by generating se… Nov 21, 2019
pathconfig.c bpo-38353: getpath.c: allocates strings on the heap (GH-16585) Oct 4, 2019
peephole.c Produce cleaner bytecode for 'with' and 'async with' by generating se… Nov 21, 2019
preconfig.c bpo-38304: Remove PyConfig.struct_size (GH-16500) (GH-16508) Oct 1, 2019
pyarena.c bpo-36254: Fix invalid uses of %d in format strings in C. (GH-12264) Mar 13, 2019
pyctype.c Include files missed in r72044. Apr 27, 2009
pyfpe.c bpo-29137: Remove fpectl module (#4789) Jan 6, 2018
pyhash.c bpo-31849: Fix warning in pyhash.c (GH-6799) Jun 4, 2018
pylifecycle.c bpo-38858: Small integer per interpreter (GH-17315) Dec 17, 2019
pymath.c bpo-35214: Add _Py_ prefix to MEMORY_SANITIZER def. (GH-10503) Nov 13, 2018
pystate.c bpo-38858: _PyImport_FixupExtensionObject() handles subinterpreters (G… Nov 22, 2019
pystrcmp.c Recorded merge of revisions 81032 via svnmerge from May 9, 2010
pystrhex.c Fix unused variable and signed/unsigned warnings (GH-15537) Aug 27, 2019
pystrtod.c bpo-38835: Don't use PyFPE_START_PROTECT and PyFPE_END_PROTECT (GH-17231 Nov 20, 2019
pythonrun.c bpo-38920: Add audit hooks for when sys.excepthook and sys.unraisable… Nov 28, 2019
pytime.c bpo-38068: Clean up gettimeofday configure logic. (GH-15775) Sep 10, 2019
strdup.c bpo-36623: Clean parser headers and include files (GH-12253) Apr 13, 2019
structmember.c Added the const qualifier to char* variables that refer to readonly i… Nov 20, 2016
symtable.c bpo-38469: Handle named expression scope with global/nonlocal keywords ( Oct 14, 2019
sysmodule.c bpo-39008: Require Py_ssize_t for PySys_Audit formats rather than rai… Dec 9, 2019
thread.c bpo-38096: Clean up the "struct sequence" / "named tuple" docs (GH-15895 Sep 11, 2019
thread_nt.h bpo-36084: Add native thread ID (TID) to threading.Thread (GH-13463) May 22, 2019
thread_pthread.h bpo-38852: Set thread stack size to 8 Mb for debug builds on android … Dec 8, 2019
traceback.c bpo-38070: _Py_DumpTraceback() writes <no Python frame> (GH-16244) Sep 17, 2019
wordcode_helpers.h bpo-31338 (#3374) Sep 15, 2017

README 

Miscellaneous source files for the main Python shared library
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