- Update to 3.11.0b5:
- Core and Builtins
- gh-93351: ast.AST node positions are now validated when
provided to compile() and other related functions. If
invalid positions are detected, a ValueError will be
raised.
- gh-94438: Fix an issue that caused extended opcode
arguments and some conditional pops to be ignored when
calculating valid jump targets for assignments to the
f_lineno attribute of frame objects. In some cases, this
could cause inconsistent internal state, resulting in a
hard crash of the interpreter.
- gh-95060: Undocumented PyCode_Addr2Location function now
properly returns when addrq argument is less than zero.
- gh-95113: Replace all EXTENDED_ARG_QUICK instructions
with basic EXTENDED_ARG instructions in unquickened
code. Consumers of non-adaptive bytecode should be able to
handle extended arguments the same way they were handled in
CPython 3.10 and older.
- gh-91409: Fix incorrect source location info caused by
certain optimizations in the bytecode compiler.
- gh-94036: Fix incorrect source location info for some
multi-line attribute accesses and method calls.
- gh-94739: Allow jumping within, out of, and across
exception handlers in the debugger.
- gh-94949: ast.parse() will no longer parse parenthesized
context managers when passed feature_version less than (3,
9). Patch by Shantanu Jain.
- gh-94947: ast.parse() will no longer parse assignment
expressions when passed feature_version less than (3,
8). Patch by Shantanu Jain.
- gh-91256: Ensures the program name is known for help text
during interpreter startup.
- gh-94869: Fix the column offsets for some expressions in
multi-line f-strings ast nodes. Patch by Pablo Galindo.
- gh-94822: Fix an issue where lookups of metaclass
descriptors may be ignored when an identically-named
attribute also exists on the class itself.
- gh-91153: Fix an issue where a bytearray item assignment
could crash if it’s resized by the new value’s __index__()
method.
- gh-90699: Fix reference counting bug in
bool.__repr__(). Patch by Kumar Aditya.
- Library
- gh-95087: Fix IndexError in parsing invalid date in the
email module.
- gh-95199: Upgrade bundled setuptools to 63.2.0.
- gh-95194: Upgrade bundled pip to 22.2.
- gh-95132: Fix a sqlite3 regression where *args and **kwds
were incorrectly relayed from connect() to the Connection
factory. The regression was introduced in 3.11a1 with PR
24421 (gh-85128). Patch by Erlend E. Aasland.`
- gh-93157: Fix fileinput module didn’t support errors option
when inplace is true.
- gh-95105: wsgiref.types.InputStream.__iter__() should
return Iterator[bytes], not Iterable[bytes]. Patch by
Shantanu Jain.
- gh-94857: Fix refleak in
_io.TextIOWrapper.reconfigure. Patch by Kumar Aditya.
- gh-94821: Fix binding of unix socket to empty address
on Linux to use an available address from the abstract
namespace, instead of “0”.
- gh-89988: Fix memory leak in pickle.Pickler when looking up
dispatch_table. Patch by Kumar Aditya.
- bpo-47025: Drop support for bytes on sys.path.
- Tests
- gh-95212: Make multiprocessing test case
test_shared_memory_recreate parallel-safe.
- Build
- gh-94847: Fixed _decimal module build issue on GCC when
compiling with LTO and pydebug. Debug builds no longer
force inlining of functions.
- gh-94841: Fix the possible performance regression of
PyObject_Free() compiled with MSVC version 1932.
- gh-94801: configure now uses custom flags like ZLIB_CFLAGS
and ZLIB_LIBS when searching for headers and libraries.
- gh-94773: deepfreeze.py now supports code object with
frozensets that contain incompatible, unsortable types.
- C API
- gh-94930: Fix SystemError raised when
PyArg_ParseTupleAndKeywords() is used with # in (...) but
without PY_SSIZE_T_CLEAN defined.
- gh-94864: Fix PyArg_Parse* with deprecated format units “u”
and “Z”. It returned 1 (success) when warnings are turned
into exceptions.
- gh-94731: Python again uses C-style casts for
most casting operations when compiled with
C++. This may trigger compiler warnings, if they
are enabled with e.g. -Wold-style-cast `` or
``-Wzero-as-null-pointer-constant options for g++.