- Issue #17323: The "[X refs, Y blocks]" printed by debug builds has been
disabled by default. It can be re-enabled with the `-X showrefcount` option.
+- Issue #17328: Fix possible refleak in dict.setdefault.
+
+- Issue #17275: Corrected class name in init error messages of the C version of
+ BufferedWriter and BufferedRandom.
+
+- Issue #7963: Fixed misleading error message that issued when object is
+ called without arguments.
+
+- Issue #8745: Small speed up zipimport on Windows. Patch by Catalin Iacob.
+
+- Issue #5308: Raise ValueError when marshalling too large object (a sequence
+ with size >= 2**31), instead of producing illegal marshal data.
+
+- Issue #12983: Bytes literals with invalid \x escape now raise a SyntaxError
+ and a full traceback including line number.
+
+- Issue #16967: In function definition, evaluate positional defaults before
+ keyword-only defaults.
+
+- Issue #17173: Remove uses of locale-dependent C functions (isalpha() etc.)
+ in the interpreter.
+
+- Issue #17137: When an Unicode string is resized, the internal wide character
+ string (wstr) format is now cleared.
+
+- Issue #17043: The unicode-internal decoder no longer read past the end of
+ input buffer.
+
+- Issue #17098: All modules now have __loader__ set even if they pre-exist the
+ bootstrapping of importlib.
+
+- Issue #16979: Fix error handling bugs in the unicode-escape-decode decoder.
+
+- Issue #16772: The base argument to the int constructor no longer accepts
+ floats, or other non-integer objects with an __int__ method. Objects
+ with an __index__ method are now accepted.
+
+- Issue #10156: In the interpreter's initialization phase, unicode globals
+ are now initialized dynamically as needed.
+
+- Issue #16980: Fix processing of escaped non-ascii bytes in the
+ unicode-escape-decode decoder.
+
+- Issue #16975: Fix error handling bug in the escape-decode bytes decoder.
+
+- Issue #14850: Now a charmap decoder treats U+FFFE as "undefined mapping"
+ in any mapping, not only in a string.
+
+- Issue #16730: importlib.machinery.FileFinder now no longers raises an
+ exception when trying to populate its cache and it finds out the directory is
+ unreadable or has turned into a file. Reported and diagnosed by
+ David Pritchard.
+
+- Issue #16906: Fix a logic error that prevented most static strings from being
+ cleared.
+
+- Issue #11461: Fix the incremental UTF-16 decoder. Original patch by
+ Amaury Forgeot d'Arc.
+
+- Issue #16856: Fix a segmentation fault from calling repr() on a dict with
+ a key whose repr raise an exception.
+
+- Issue #16367: Fix FileIO.readall() on Windows for files larger than 2 GB.
+
+- Issue #16761: Calling int() with base argument only now raises TypeError.
+
+- Issue #16759: Support the full DWORD (unsigned long) range in Reg2Py
+ when retrieving a REG_DWORD value. This corrects functions like
+ winreg.QueryValueEx that may have been returning truncated values.
+
+- Issue #14420: Support the full DWORD (unsigned long) range in Py2Reg
+ when passed a REG_DWORD value. Fixes OverflowError in winreg.SetValueEx.
+
+- Issue #11939: Set the st_dev attribute of stat_result to allow Windows to
+ take advantage of the os.path.samefile/sameopenfile/samestat implementations
+ used by other platforms.
+
+- Issue #16772: The int() constructor's second argument (base) no longer
+ accepts non integer values. Consistent with the behavior in Python 2.
+
+- Issue #14470: Remove w9xpopen support per PEP 11.
+
+- Issue #9856: Replace deprecation warning with raising TypeError
+ in object.__format__. Patch by Florent Xicluna.
+
+- Issue #16597: In buffered and text IO, call close() on the underlying stream
+ if invoking flush() fails.
+
+- Issue #16722: In the bytes() constructor, try to call __bytes__ on the
+ argument before __index__.
+
+- Issue #16421: loading multiple modules from one shared object is now
+ handled correctly (previously, the first module loaded from that file
+ was silently returned). Patch by Václav Šmilauer.
+
+- Issue #16602: When a weakref's target was part of a long deallocation
+ chain, the object could remain reachable through its weakref even though
+ its refcount had dropped to zero.
+
+- Issue #16495: Remove extraneous NULL encoding check from bytes_decode().
+
+- Issue #16619: Create NameConstant AST class to represent None, True, and False
+ literals. As a result, these constants are never loaded at runtime from
+ builtins.
+
+- Issue #16455: On FreeBSD and Solaris, if the locale is C, the
+ ASCII/surrogateescape codec is now used, instead of the locale encoding, to
+ decode the command line arguments. This change fixes inconsistencies with
+ os.fsencode() and os.fsdecode() because these operating systems announces an
+ ASCII locale encoding, whereas the ISO-8859-1 encoding is used in practice.
+
+- Issue #16562: Optimize dict equality testing. Patch by Serhiy Storchaka.
+
+- Issue #16588: Silence unused-but-set warnings in Python/thread_pthread
+
+- Issue #16592: stringlib_bytes_join doesn't raise MemoryError on allocation
+ failure.
+
+- Issue #16546: Fix: ast.YieldFrom argument is now mandatory.
+
+- Issue #16514: Fix regression causing a traceback when sys.path[0] is None
+ (actually, any non-string or non-bytes type).
+
+- Issue #16306: Fix multiple error messages when unknown command line
+ parameters where passed to the interpreter. Patch by Hieu Nguyen.
+
+- Issue #16215: Fix potential double memory free in str.replace(). Patch
+ by Serhiy Storchaka.
+
+- Issue #16290: A float return value from the __complex__ special method is no
+ longer accepted in the complex() constructor.
+
+- Issue #16416: On Mac OS X, operating system data are now always
+ encoded/decoded to/from UTF-8/surrogateescape, instead of the locale encoding
+ (which may be ASCII if no locale environment variable is set), to avoid
+ inconsistencies with os.fsencode() and os.fsdecode() functions which are
+ already using UTF-8/surrogateescape.
+
+- Issue #16453: Fix equality testing of dead weakref objects.
+
+- Issue #9535: Fix pending signals that have been received but not yet
+ handled by Python to not persist after os.fork() in the child process.
+
+- Issue #14794: Fix slice.indices to return correct results for huge values,
+ rather than raising OverflowError.
+
+- Issue #15001: fix segfault on "del sys.modules['__main__']". Patch by Victor
+ Stinner.
+
+- Issue #8271: the utf-8 decoder now outputs the correct number of U+FFFD
+ characters when used with the 'replace' error handler on invalid utf-8
+ sequences. Patch by Serhiy Storchaka, tests by Ezio Melotti.
+
+- Issue #5765: Apply a hard recursion limit in the compiler instead of
+ blowing the stack and segfaulting. Initial patch by Andrea Griffini.
+
+- Issue #16402: When slicing a range, fix shadowing of exceptions from
+ __index__.
+
+- Issue #16336: fix input checking in the surrogatepass error handler.
+ Patch by Serhiy Storchaka.
+
+- Issue #8401: assigning an int to a bytearray slice (e.g. b[3:4] = 5) now
+ raises an error.
+
+- Issue #7317: Display full tracebacks when an error occurs asynchronously.
+ Patch by Alon Horev with update by Alexey Kachayev.
+
+- Issue #16309: Make PYTHONPATH="" behavior the same as if PYTHONPATH
+ not set at all.
+
+- Issue #10189: Improve the error reporting of SyntaxErrors related to global
+ and nonlocal statements.
+
+- Fix segfaults on setting __qualname__ on builtin types and attempting to
+ delete it on any type.
+
+- Issue #14625: Rewrite the UTF-32 decoder. It is now 3x to 4x faster. Patch
+ written by Serhiy Storchaka.
+
+- Issue #16345: Fix an infinite loop when ``fromkeys`` on a dict subclass
+ received a nonempty dict from the constructor.
+
+- Issue #16271: Fix strange bugs that resulted from __qualname__ appearing in a
+ class's __dict__ and on type.
+
+- Issue #12805: Make bytes.join and bytearray.join faster when the separator
+ is empty. Patch by Serhiy Storchaka.
+
+- Issue #6074: Ensure cached bytecode files can always be updated by the
+ user that created them, even when the source file is read-only.
+
+- Issue #15958: bytes.join and bytearray.join now accept arbitrary buffer
+ objects.
+
+- Issue #14783: Improve int() docstring and switch docstrings for str(),
+ range(), and slice() to use multi-line signatures.
+
+- Issue #16160: Subclass support now works for types.SimpleNamespace.
+
+- Upgrade Unicode data (UCD) to version 6.2.
+
+- Issue #15379: Fix passing of non-BMP characters as integers for the charmap
+ decoder (already working as unicode strings). Patch by Serhiy Storchaka.
+
+- Issue #15144: Fix possible integer overflow when handling pointers as integer
+ values, by using `Py_uintptr_t` instead of `size_t`. Patch by Serhiy
+ Storchaka.
+
+- Issue #15965: Explicitly cast `AT_FDCWD` as (int). Required on Solaris 10
+ (which defines `AT_FDCWD` as ``0xffd19553``), harmless on other platforms.
+
+- Issue #15839: Convert SystemErrors in `super()` to RuntimeErrors.
+
+- Issue #15448: Buffered IO now frees the buffer when closed, instead
+ of when deallocating.
+
+- Issue #15846: Fix SystemError which happened when using `ast.parse()` in an
+ exception handler on code with syntax errors.
+
+- Issue #15897: zipimport.c doesn't check return value of fseek().
+ Patch by Felipe Cruz.
+
+- Issue #15801: Make sure mappings passed to '%' formatting are actually
+ subscriptable.
+
+- Issue #15111: __import__ should propagate ImportError when raised as a
+ side-effect of a module triggered from using fromlist.
+
+- Issue #15022: Add pickle and comparison support to types.SimpleNamespace.
+
Library
-------
- Issue #17487: The wave getparams method now returns a namedtuple rather than
a plain tuple.
-- Issue #17675: socket repr() provides local and remote addresses (if any).
- Patch by Giampaolo Rodola'
-
-- Issue #17093: Make the ABCs in importlib.abc provide default values or raise
- reasonable exceptions for their methods to make them more amenable to super()
- calls.
-
-- Issue #17566: Make importlib.abc.Loader.module_repr() optional instead of an
- abstractmethod and raising NotImplementedError so as to be ignored by default.
-
-- Issue #17678: Remove the use of deprecated method in http/cookiejar.py.
- Changing the usage of get_origin_req_host() to origin_req_host.
-
-- Issue #17666: Fix reading gzip files with an extra field.
-
-- Issue #16475: Support object instancing, recursion and interned strings
- in marshal
-
-- Issue #17502: Process DEFAULT values in mock side_effect that returns iterator.
-
-- Issue #16795: On the ast.arguments object, unify vararg with varargannotation
- and kwarg and kwargannotation. Change the column offset of ast.Attribute to be
- at the attribute name.
-
-- Issue #17434: Properly raise a SyntaxError when a string occurs between future
- imports.
-
-- Issue #17117: Import and @importlib.util.set_loader now set __loader__ when
- it has a value of None or the attribute doesn't exist.
-
-- Issue #17032: The "global" in the "NameError: global name 'x' is not defined"
- error message has been removed. Patch by Ram Rachum.
-
-- Issue #18080: When building a C extension module on OS X, if the compiler
- is overriden with the CC environment variable, use the new compiler as
- the default for linking if LDSHARED is not also overriden. This restores
- Distutils behavior introduced in 3.2.3 and inadvertently dropped in 3.3.0.
-
-- Issue #18113: Fixed a refcount leak in the curses.panel module's
- set_userptr() method. Reported by Atsuo Ishimoto.
-
-- Implement PEP 443 "Single-dispatch generic functions".
-
-- Implement PEP 435 "Adding an Enum type to the Python standard library".
-
-Tests
------
-
-- Issue #1666318: Add a test that shutil.copytree() retains directory
- permissions. Patch by Catherine Devlin.
-
-- Issue #18273: move the tests in Lib/test/json_tests to Lib/test/test_json
- and make them discoverable by unittest. Patch by Zachary Ware.
-
-- Fix a fcntl test case on KFreeBSD, Debian #708653 (Petr Salinger).
-
-- Issue #18396: Fix spurious test failure in test_signal on Windows when
- faulthandler is enabled (Patch by Jeremy Kloth)
-
-- Issue #17046: Fix broken test_executable_without_cwd in test_subprocess.
-
-- Issue #15415: Add new temp_dir() and change_cwd() context managers to
- test.support, and refactor temp_cwd() to use them. Patch by Chris Jerdonek.
-
-- Issue #15494: test.support is now a package rather than a module (Initial
- patch by Indra Talip)
-
-- Issue #17944: test_zipfile now discoverable and uses subclassing to
- generate tests for different compression types. Fixed a bug with skipping
- some tests due to use of exhausted iterators.
-
-- Issue #18266: test_largefile now works with unittest test discovery and
- supports running only selected tests. Patch by Zachary Ware.
-
-- Issue #17767: test_locale now works with unittest test discovery.
- Original patch by Zachary Ware.
-
-- Issue #18375: Assume --randomize when --randseed is used for running the
- testsuite.
-
-- Issue #11185: Fix test_wait4 under AIX. Patch by Sébastien Sablé.
-
-- Issue #18207: Fix test_ssl for some versions of OpenSSL that ignore seconds
- in ASN1_TIME fields.
-
-- Issue #18094: test_uuid no more reports skipped tests as passed.
-
-- Issue #17992: Add timeouts to asyncore and asynchat tests so that they won't
- accidentally hang.
-
-- Issue #17833: Fix test_gdb failures seen on machines where debug symbols
- for glibc are available (seen on PPC64 Linux).
-
-- Issue #7855: Add tests for ctypes/winreg for issues found in IronPython.
- Initial patch by Dino Viehland.
-
-- Issue #11078: test___all__ now checks for duplicates in __all__.
- Initial patch by R. David Murray.
-
-- Issue #17712: Fix test_gdb failures on Ubuntu 13.04.
-
-- Issue #17835: Fix test_io when the default OS pipe buffer size is larger
- than one million bytes.
-
-- Issue #17065: Use process-unique key for winreg tests to avoid failures if
- test is run multiple times in parallel (eg: on a buildbot host).
-
-- Issue #12820: add tests for the xml.dom.minicompat module.
- Patch by John Chandler and Phil Connell.
-
-- Issue #17691: test_univnewlines now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #17790: test_set now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #17789: test_random now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #17779: test_osx_env now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #17766: test_iterlen now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #17690: test_time now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #17692: test_sqlite now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #11995: test_pydoc doesn't import all sys.path modules anymore.
-
-Documentation
--------------
-
-- Issue #17701: Improving strftime documentation.
-
-- Issue #18440: Clarify that `hash()` can truncate the value returned from an
- object's custom `__hash__()` method.
-
-- Issue #17844: Add links to encoders and decoders for bytes-to-bytes codecs.
-
-- Issue #14097: improve the "introduction" page of the tutorial.
-
-- Issue #17977: The documentation for the cadefault argument's default value
- in urllib.request.urlopen() is fixed to match the code.
-
-- Issue #15940: Specify effect of locale on time functions.
-
-- Issue #6696: add documentation for the Profile objects, and improve
- profile/cProfile docs. Patch by Tom Pinckney.
-
-C-API
------
-
-- Issue #18351: Fix various issues in a function in importlib provided to help
- PyImport_ExecCodeModuleWithPathnames() (and thus by extension PyImport_ExecCodeModule() and PyImport_ExecCodeModuleEx()).
-
-- Issue #9369: The types of `char*` arguments of PyObject_CallFunction() and
- PyObject_CallMethod() now changed to `const char*`. Based on patches by
- Jörg Müller and Lars Buitinck.
-
-- Issue #17206: Py_CLEAR(), Py_DECREF(), Py_XINCREF() and Py_XDECREF() now
- expand their arguments once instead of multiple times. Patch written by Illia
- Polosukhin.
-
-- Issue #17522: Add the PyGILState_Check() API.
-
-- Issue #17327: Add PyDict_SetDefault.
-
-IDLE
-----
-
-- Issue #18429: Format / Format Paragraph, now works when comment blocks
- are selected. As with text blocks, this works best when the selection
- only includes complete lines.
-
-- Issue #18226: Add docstrings and unittests for FormatParagraph.py.
- Original patches by Todd Rovito and Phil Webster.
-
-- Issue #18279: Format - Strip trailing whitespace no longer marks a file as
- changed when it has not been changed. This fix followed the addition of a
- test file originally written by Phil Webster (the issue's main goal).
-
-- Issue #7136: In the Idle File menu, "New Window" is renamed "New File".
- Patch by Tal Einat, Roget Serwy, and Todd Rovito.
-
-- Remove dead imports of imp.
-
-- Issue #18196: Avoid displaying spurious SystemExit tracebacks.
-
-- Issue #5492: Avoid traceback when exiting IDLE caused by a race condition.
-
-- Issue #17511: Keep IDLE find dialog open after clicking "Find Next".
- Original patch by Sarah K.
-
-- Issue #18055: Move IDLE off of imp and on to importlib.
-
-- Issue #15392: Create a unittest framework for IDLE.
- Initial patch by Rajagopalasarma Jayakrishnan.
- See Lib/idlelib/idle_test/README.txt for how to run Idle tests.
-
-- Issue #14146: Highlight source line while debugging on Windows.
-
-- Issue #17838: Allow sys.stdin to be reassigned.
-
-- Issue #13495: Avoid loading the color delegator twice in IDLE.
-
-- Issue #17798: Allow IDLE to edit new files when specified on command line.
-
-- Issue #14735: Update IDLE docs to omit "Control-z on Windows".
-
-- Issue #17532: Always include Options menu for IDLE on OS X.
- Patch by Guilherme Simões.
-
-Windows
--------
-
-- Issue #18569: The installer now adds .py to the PATHEXT variable when extensions
- are registered. Patch by Paul Moore.
-
-Build
------
-
-- Issue #16067: Add description into MSI file to replace installer's
- temporary name.
-
-- Issue #18257: Fix readlink usage in python-config. Install the python
- version again on Darwin.
-
-- Issue #18481: Add C coverage reporting with gcov and lcov. A new make target
- "coverage-report" creates an instrumented Python build, runs unit tests
- and creates a HTML. The report can be updated with "make coverage-lcov".
-
-- Issue #17845: Clarified the message printed when some module are not built.
-
-- Issue #18256: Compilation fix for recent AIX releases. Patch by
- David Edelsohn.
-
-- Issue #17547: In configure, explicitly pass -Wformat for the benefit for GCC
- 4.8.
-
-- Issue #15172: Document NASM 2.10+ as requirement for building OpenSSL 1.0.1
- on Windows.
-
-Tools/Demos
------------
-
-- Issue #18817: Fix a resource warning in Lib/aifc.py demo. Patch by
- Vajrasky Kok.
-
-- Issue #18439: Make patchcheck work on Windows for ACKS, NEWS.
-
-- Issue #18448: Fix a typo in Tools/demo/eiffel.py.
-
-- Issue #18457: Fixed saving of formulas and complex numbers in
- Tools/demo/ss1.py.
-
-- Issue #18449: Make Tools/demo/ss1.py work again on Python 3. Patch by
- Févry Thibault.
-
-- Issue #12990: The "Python Launcher" on OSX could not launch python scripts
- that have paths that include wide characters.
-
-- Issue #17328: Fix possible refleak in dict.setdefault.
-
-- Issue #17275: Corrected class name in init error messages of the C version of
- BufferedWriter and BufferedRandom.
-
-- Issue #7963: Fixed misleading error message that issued when object is
- called without arguments.
-
-- Issue #8745: Small speed up zipimport on Windows. Patch by Catalin Iacob.
-
-- Issue #5308: Raise ValueError when marshalling too large object (a sequence
- with size >= 2**31), instead of producing illegal marshal data.
-
-- Issue #12983: Bytes literals with invalid \x escape now raise a SyntaxError
- and a full traceback including line number.
-
-- Issue #16967: In function definition, evaluate positional defaults before
- keyword-only defaults.
-
-- Issue #17173: Remove uses of locale-dependent C functions (isalpha() etc.)
- in the interpreter.
-
-- Issue #17137: When an Unicode string is resized, the internal wide character
- string (wstr) format is now cleared.
-
-- Issue #17043: The unicode-internal decoder no longer read past the end of
- input buffer.
-
-- Issue #17098: All modules now have __loader__ set even if they pre-exist the
- bootstrapping of importlib.
-
-- Issue #16979: Fix error handling bugs in the unicode-escape-decode decoder.
-
-- Issue #16772: The base argument to the int constructor no longer accepts
- floats, or other non-integer objects with an __int__ method. Objects
- with an __index__ method are now accepted.
-
-- Issue #10156: In the interpreter's initialization phase, unicode globals
- are now initialized dynamically as needed.
-
-- Issue #16980: Fix processing of escaped non-ascii bytes in the
- unicode-escape-decode decoder.
-
-- Issue #16975: Fix error handling bug in the escape-decode bytes decoder.
-
-- Issue #14850: Now a charmap decoder treats U+FFFE as "undefined mapping"
- in any mapping, not only in a string.
-
-- Issue #16730: importlib.machinery.FileFinder now no longers raises an
- exception when trying to populate its cache and it finds out the directory is
- unreadable or has turned into a file. Reported and diagnosed by
- David Pritchard.
-
-- Issue #16906: Fix a logic error that prevented most static strings from being
- cleared.
-
-- Issue #11461: Fix the incremental UTF-16 decoder. Original patch by
- Amaury Forgeot d'Arc.
-
-- Issue #16856: Fix a segmentation fault from calling repr() on a dict with
- a key whose repr raise an exception.
-
-- Issue #16367: Fix FileIO.readall() on Windows for files larger than 2 GB.
-
-- Issue #16761: Calling int() with base argument only now raises TypeError.
-
-- Issue #16759: Support the full DWORD (unsigned long) range in Reg2Py
- when retrieving a REG_DWORD value. This corrects functions like
- winreg.QueryValueEx that may have been returning truncated values.
-
-- Issue #14420: Support the full DWORD (unsigned long) range in Py2Reg
- when passed a REG_DWORD value. Fixes OverflowError in winreg.SetValueEx.
-
-- Issue #11939: Set the st_dev attribute of stat_result to allow Windows to
- take advantage of the os.path.samefile/sameopenfile/samestat implementations
- used by other platforms.
-
-- Issue #16772: The int() constructor's second argument (base) no longer
- accepts non integer values. Consistent with the behavior in Python 2.
-
-- Issue #14470: Remove w9xpopen support per PEP 11.
-
-- Issue #9856: Replace deprecation warning with raising TypeError
- in object.__format__. Patch by Florent Xicluna.
-
-- Issue #16597: In buffered and text IO, call close() on the underlying stream
- if invoking flush() fails.
-
-- Issue #16722: In the bytes() constructor, try to call __bytes__ on the
- argument before __index__.
-
-- Issue #16421: loading multiple modules from one shared object is now
- handled correctly (previously, the first module loaded from that file
- was silently returned). Patch by Václav Šmilauer.
-
-- Issue #16602: When a weakref's target was part of a long deallocation
- chain, the object could remain reachable through its weakref even though
- its refcount had dropped to zero.
-
-- Issue #16495: Remove extraneous NULL encoding check from bytes_decode().
-
-- Issue #16619: Create NameConstant AST class to represent None, True, and False
- literals. As a result, these constants are never loaded at runtime from
- builtins.
-
-- Issue #16455: On FreeBSD and Solaris, if the locale is C, the
- ASCII/surrogateescape codec is now used, instead of the locale encoding, to
- decode the command line arguments. This change fixes inconsistencies with
- os.fsencode() and os.fsdecode() because these operating systems announces an
- ASCII locale encoding, whereas the ISO-8859-1 encoding is used in practice.
-
-- Issue #16562: Optimize dict equality testing. Patch by Serhiy Storchaka.
-
-- Issue #16588: Silence unused-but-set warnings in Python/thread_pthread
-
-- Issue #16592: stringlib_bytes_join doesn't raise MemoryError on allocation
- failure.
-
-- Issue #16546: Fix: ast.YieldFrom argument is now mandatory.
-
-- Issue #16514: Fix regression causing a traceback when sys.path[0] is None
- (actually, any non-string or non-bytes type).
-
-- Issue #16306: Fix multiple error messages when unknown command line
- parameters where passed to the interpreter. Patch by Hieu Nguyen.
-
-- Issue #16215: Fix potential double memory free in str.replace(). Patch
- by Serhiy Storchaka.
-
-- Issue #16290: A float return value from the __complex__ special method is no
- longer accepted in the complex() constructor.
-
-- Issue #16416: On Mac OS X, operating system data are now always
- encoded/decoded to/from UTF-8/surrogateescape, instead of the locale encoding
- (which may be ASCII if no locale environment variable is set), to avoid
- inconsistencies with os.fsencode() and os.fsdecode() functions which are
- already using UTF-8/surrogateescape.
-
-- Issue #16453: Fix equality testing of dead weakref objects.
-
-- Issue #9535: Fix pending signals that have been received but not yet
- handled by Python to not persist after os.fork() in the child process.
-
-- Issue #14794: Fix slice.indices to return correct results for huge values,
- rather than raising OverflowError.
-
-- Issue #15001: fix segfault on "del sys.modules['__main__']". Patch by Victor
- Stinner.
-
-- Issue #8271: the utf-8 decoder now outputs the correct number of U+FFFD
- characters when used with the 'replace' error handler on invalid utf-8
- sequences. Patch by Serhiy Storchaka, tests by Ezio Melotti.
-
-- Issue #5765: Apply a hard recursion limit in the compiler instead of
- blowing the stack and segfaulting. Initial patch by Andrea Griffini.
-
-- Issue #16402: When slicing a range, fix shadowing of exceptions from
- __index__.
-
-- Issue #16336: fix input checking in the surrogatepass error handler.
- Patch by Serhiy Storchaka.
-
-- Issue #8401: assigning an int to a bytearray slice (e.g. b[3:4] = 5) now
- raises an error.
-
-- Issue #7317: Display full tracebacks when an error occurs asynchronously.
- Patch by Alon Horev with update by Alexey Kachayev.
-
-- Issue #16309: Make PYTHONPATH="" behavior the same as if PYTHONPATH
- not set at all.
-
-- Issue #10189: Improve the error reporting of SyntaxErrors related to global
- and nonlocal statements.
-
-- Fix segfaults on setting __qualname__ on builtin types and attempting to
- delete it on any type.
-
-- Issue #14625: Rewrite the UTF-32 decoder. It is now 3x to 4x faster. Patch
- written by Serhiy Storchaka.
-
-- Issue #16345: Fix an infinite loop when ``fromkeys`` on a dict subclass
- received a nonempty dict from the constructor.
-
-- Issue #16271: Fix strange bugs that resulted from __qualname__ appearing in a
- class's __dict__ and on type.
-
-- Issue #12805: Make bytes.join and bytearray.join faster when the separator
- is empty. Patch by Serhiy Storchaka.
-
-- Issue #6074: Ensure cached bytecode files can always be updated by the
- user that created them, even when the source file is read-only.
-
-- Issue #15958: bytes.join and bytearray.join now accept arbitrary buffer
- objects.
+- Issue #17675: socket repr() provides local and remote addresses (if any).
+ Patch by Giampaolo Rodola'
-- Issue #14783: Improve int() docstring and switch docstrings for str(),
- range(), and slice() to use multi-line signatures.
+- Issue #17093: Make the ABCs in importlib.abc provide default values or raise
+ reasonable exceptions for their methods to make them more amenable to super()
+ calls.
-- Issue #16160: Subclass support now works for types.SimpleNamespace.
+- Issue #17566: Make importlib.abc.Loader.module_repr() optional instead of an
+ abstractmethod and raising NotImplementedError so as to be ignored by default.
-- Upgrade Unicode data (UCD) to version 6.2.
+- Issue #17678: Remove the use of deprecated method in http/cookiejar.py.
+ Changing the usage of get_origin_req_host() to origin_req_host.
-- Issue #15379: Fix passing of non-BMP characters as integers for the charmap
- decoder (already working as unicode strings). Patch by Serhiy Storchaka.
+- Issue #17666: Fix reading gzip files with an extra field.
-- Issue #15144: Fix possible integer overflow when handling pointers as integer
- values, by using `Py_uintptr_t` instead of `size_t`. Patch by Serhiy
- Storchaka.
+- Issue #16475: Support object instancing, recursion and interned strings
+ in marshal
-- Issue #15965: Explicitly cast `AT_FDCWD` as (int). Required on Solaris 10
- (which defines `AT_FDCWD` as ``0xffd19553``), harmless on other platforms.
+- Issue #17502: Process DEFAULT values in mock side_effect that returns iterator.
-- Issue #15839: Convert SystemErrors in `super()` to RuntimeErrors.
+- Issue #16795: On the ast.arguments object, unify vararg with varargannotation
+ and kwarg and kwargannotation. Change the column offset of ast.Attribute to be
+ at the attribute name.
-- Issue #15448: Buffered IO now frees the buffer when closed, instead
- of when deallocating.
+- Issue #17434: Properly raise a SyntaxError when a string occurs between future
+ imports.
-- Issue #15846: Fix SystemError which happened when using `ast.parse()` in an
- exception handler on code with syntax errors.
+- Issue #17117: Import and @importlib.util.set_loader now set __loader__ when
+ it has a value of None or the attribute doesn't exist.
-- Issue #15897: zipimport.c doesn't check return value of fseek().
- Patch by Felipe Cruz.
+- Issue #17032: The "global" in the "NameError: global name 'x' is not defined"
+ error message has been removed. Patch by Ram Rachum.
-- Issue #15801: Make sure mappings passed to '%' formatting are actually
- subscriptable.
+- Issue #18080: When building a C extension module on OS X, if the compiler
+ is overriden with the CC environment variable, use the new compiler as
+ the default for linking if LDSHARED is not also overriden. This restores
+ Distutils behavior introduced in 3.2.3 and inadvertently dropped in 3.3.0.
-- Issue #15111: __import__ should propagate ImportError when raised as a
- side-effect of a module triggered from using fromlist.
+- Issue #18113: Fixed a refcount leak in the curses.panel module's
+ set_userptr() method. Reported by Atsuo Ishimoto.
-- Issue #15022: Add pickle and comparison support to types.SimpleNamespace.
+- Implement PEP 443 "Single-dispatch generic functions".
-Library
--------
+- Implement PEP 435 "Adding an Enum type to the Python standard library".
- Issue #15596: Faster pickling of unicode strings.
IDLE
----
+- Issue #18429: Format / Format Paragraph, now works when comment blocks
+ are selected. As with text blocks, this works best when the selection
+ only includes complete lines.
+
+- Issue #18226: Add docstrings and unittests for FormatParagraph.py.
+ Original patches by Todd Rovito and Phil Webster.
+
+- Issue #18279: Format - Strip trailing whitespace no longer marks a file as
+ changed when it has not been changed. This fix followed the addition of a
+ test file originally written by Phil Webster (the issue's main goal).
+
+- Issue #7136: In the Idle File menu, "New Window" is renamed "New File".
+ Patch by Tal Einat, Roget Serwy, and Todd Rovito.
+
+- Remove dead imports of imp.
+
+- Issue #18196: Avoid displaying spurious SystemExit tracebacks.
+
+- Issue #5492: Avoid traceback when exiting IDLE caused by a race condition.
+
+- Issue #17511: Keep IDLE find dialog open after clicking "Find Next".
+ Original patch by Sarah K.
+
+- Issue #18055: Move IDLE off of imp and on to importlib.
+
+- Issue #15392: Create a unittest framework for IDLE.
+ Initial patch by Rajagopalasarma Jayakrishnan.
+ See Lib/idlelib/idle_test/README.txt for how to run Idle tests.
+
+- Issue #14146: Highlight source line while debugging on Windows.
+
+- Issue #17838: Allow sys.stdin to be reassigned.
+
+- Issue #13495: Avoid loading the color delegator twice in IDLE.
+
+- Issue #17798: Allow IDLE to edit new files when specified on command line.
+
+- Issue #14735: Update IDLE docs to omit "Control-z on Windows".
+
+- Issue #17532: Always include Options menu for IDLE on OS X.
+ Patch by Guilherme Simões.
+
- Issue #17585: Fixed IDLE regression. Now closes when using exit() or quit().
- Issue #17657: Show full Tk version in IDLE's about dialog.
Tests
-----
+- Issue #1666318: Add a test that shutil.copytree() retains directory
+ permissions. Patch by Catherine Devlin.
+
+- Issue #18273: move the tests in Lib/test/json_tests to Lib/test/test_json
+ and make them discoverable by unittest. Patch by Zachary Ware.
+
+- Fix a fcntl test case on KFreeBSD, Debian #708653 (Petr Salinger).
+
+- Issue #18396: Fix spurious test failure in test_signal on Windows when
+ faulthandler is enabled (Patch by Jeremy Kloth)
+
+- Issue #17046: Fix broken test_executable_without_cwd in test_subprocess.
+
+- Issue #15415: Add new temp_dir() and change_cwd() context managers to
+ test.support, and refactor temp_cwd() to use them. Patch by Chris Jerdonek.
+
+- Issue #15494: test.support is now a package rather than a module (Initial
+ patch by Indra Talip)
+
+- Issue #17944: test_zipfile now discoverable and uses subclassing to
+ generate tests for different compression types. Fixed a bug with skipping
+ some tests due to use of exhausted iterators.
+
+- Issue #18266: test_largefile now works with unittest test discovery and
+ supports running only selected tests. Patch by Zachary Ware.
+
+- Issue #17767: test_locale now works with unittest test discovery.
+ Original patch by Zachary Ware.
+
+- Issue #18375: Assume --randomize when --randseed is used for running the
+ testsuite.
+
+- Issue #11185: Fix test_wait4 under AIX. Patch by Sébastien Sablé.
+
+- Issue #18207: Fix test_ssl for some versions of OpenSSL that ignore seconds
+ in ASN1_TIME fields.
+
+- Issue #18094: test_uuid no more reports skipped tests as passed.
+
+- Issue #17992: Add timeouts to asyncore and asynchat tests so that they won't
+ accidentally hang.
+
+- Issue #17833: Fix test_gdb failures seen on machines where debug symbols
+ for glibc are available (seen on PPC64 Linux).
+
+- Issue #7855: Add tests for ctypes/winreg for issues found in IronPython.
+ Initial patch by Dino Viehland.
+
+- Issue #11078: test___all__ now checks for duplicates in __all__.
+ Initial patch by R. David Murray.
+
+- Issue #17712: Fix test_gdb failures on Ubuntu 13.04.
+
+- Issue #17835: Fix test_io when the default OS pipe buffer size is larger
+ than one million bytes.
+
+- Issue #17065: Use process-unique key for winreg tests to avoid failures if
+ test is run multiple times in parallel (eg: on a buildbot host).
+
+- Issue #12820: add tests for the xml.dom.minicompat module.
+ Patch by John Chandler and Phil Connell.
+
+- Issue #17691: test_univnewlines now works with unittest test discovery.
+ Patch by Zachary Ware.
+
+- Issue #17790: test_set now works with unittest test discovery.
+ Patch by Zachary Ware.
+
+- Issue #17789: test_random now works with unittest test discovery.
+ Patch by Zachary Ware.
+
+- Issue #17779: test_osx_env now works with unittest test discovery.
+ Patch by Zachary Ware.
+
+- Issue #17766: test_iterlen now works with unittest test discovery.
+ Patch by Zachary Ware.
+
+- Issue #17690: test_time now works with unittest test discovery.
+ Patch by Zachary Ware.
+
+- Issue #17692: test_sqlite now works with unittest test discovery.
+ Patch by Zachary Ware.
+
+- Issue #11995: test_pydoc doesn't import all sys.path modules anymore.
+
- Issue #17448: test_sax now skips if there are no xml parsers available
instead of raising an ImportError.
Build
-----
+- Issue #16067: Add description into MSI file to replace installer's
+ temporary name.
+
+- Issue #18257: Fix readlink usage in python-config. Install the python
+ version again on Darwin.
+
+- Issue #18481: Add C coverage reporting with gcov and lcov. A new make target
+ "coverage-report" creates an instrumented Python build, runs unit tests
+ and creates a HTML. The report can be updated with "make coverage-lcov".
+
+- Issue #17845: Clarified the message printed when some module are not built.
+
+- Issue #18256: Compilation fix for recent AIX releases. Patch by
+ David Edelsohn.
+
+- Issue #17547: In configure, explicitly pass -Wformat for the benefit for GCC
+ 4.8.
+
+- Issue #15172: Document NASM 2.10+ as requirement for building OpenSSL 1.0.1
+ on Windows.
+
- Issue #17591: Use lowercase filenames when including Windows header files.
Patch by Roumen Petrov.
C-API
-----
+- Issue #18351: Fix various issues in a function in importlib provided to help
+ PyImport_ExecCodeModuleWithPathnames() (and thus by extension
+ PyImport_ExecCodeModule() and PyImport_ExecCodeModuleEx()).
+
+- Issue #9369: The types of `char*` arguments of PyObject_CallFunction() and
+ PyObject_CallMethod() now changed to `const char*`. Based on patches by
+ Jörg Müller and Lars Buitinck.
+
+- Issue #17206: Py_CLEAR(), Py_DECREF(), Py_XINCREF() and Py_XDECREF() now
+ expand their arguments once instead of multiple times. Patch written by Illia
+ Polosukhin.
+
+- Issue #17522: Add the PyGILState_Check() API.
+
+- Issue #17327: Add PyDict_SetDefault.
+
- Issue #16881: Fix Py_ARRAY_LENGTH macro for GCC < 3.1.
- Issue #15422: Get rid of PyCFunction_New macro. Use PyCFunction_NewEx
Documentation
-------------
+- Issue #17701: Improving strftime documentation.
+
+- Issue #18440: Clarify that `hash()` can truncate the value returned from an
+ object's custom `__hash__()` method.
+
+- Issue #17844: Add links to encoders and decoders for bytes-to-bytes codecs.
+
+- Issue #14097: improve the "introduction" page of the tutorial.
+
+- Issue #17977: The documentation for the cadefault argument's default value
+ in urllib.request.urlopen() is fixed to match the code.
+
+- Issue #15940: Specify effect of locale on time functions.
+
+- Issue #6696: add documentation for the Profile objects, and improve
+ profile/cProfile docs. Patch by Tom Pinckney.
+
- Issue #15940: Specify effect of locale on time functions.
- Issue 17538: Document XML vulnerabilties
Tools/Demos
-----------
+- Issue #18817: Fix a resource warning in Lib/aifc.py demo. Patch by
+ Vajrasky Kok.
+
+- Issue #18439: Make patchcheck work on Windows for ACKS, NEWS.
+
+- Issue #18448: Fix a typo in Tools/demo/eiffel.py.
+
+- Issue #18457: Fixed saving of formulas and complex numbers in
+ Tools/demo/ss1.py.
+
+- Issue #18449: Make Tools/demo/ss1.py work again on Python 3. Patch by
+ Févry Thibault.
+
+- Issue #12990: The "Python Launcher" on OSX could not launch python scripts
+ that have paths that include wide characters.
+
- Issue #15239: Make mkstringprep.py work again on Python 3.
- Issue #17028: Allowed Python arguments to be supplied to the Windows
- Issue #13301: use ast.literal_eval() instead of eval() in Tools/i18n/msgfmt.py
Patch by Serhiy Storchaka.
+Windows
+-------
+
+- Issue #18569: The installer now adds .py to the PATHEXT variable when extensions
+ are registered. Patch by Paul Moore.
+
What's New in Python 3.3.0?
===========================
projects / python / commitdiff