Core and Builtins
-----------------
-- Issue #18942: sys._debugmallocstats() output was damaged on Windows.
+- Issue #18818: The "encodingname" part of PYTHONIOENCODING is now optional.
-- Issue #18667: Add missing "HAVE_FCHOWNAT" symbol to posix._have_functions.
+Library
+-------
-- Issue #18368: PyOS_StdioReadline() no longer leaks memory when realloc()
- fails.
++- Issue #18873: The tokenize module now detects Python source code encoding
++ only in comment lines.
+
-- Issue #16741: Fix an error reporting in int().
+- Issue #17764: Enable http.server to bind to a user specified network
+ interface. Patch contributed by Malte Swart.
-- Issue #17899: Fix rare file descriptor leak in os.listdir().
+- Issue #18937: Add an assertLogs() context manager to unittest.TestCase
+ to ensure that a block of code emits a message using the logging module.
-- Issue #18552: Check return value of PyArena_AddPyObject() in
- obj2ast_object().
+- Issue #17324: Fix http.server's request handling case on trailing '/'. Patch
+ contributed by Vajrasky Kok.
-- Issue #18560: Fix potential NULL pointer dereference in sum().
+- Issue #19018: The heapq.merge() function no longer suppresses IndexError
+ in the underlying iterables.
-- Issue #15905: Fix theoretical buffer overflow in handling of sys.argv[0],
- prefix and exec_prefix if the operation system does not obey MAXPATHLEN.
+- Issue #18784: The uuid module no more attempts to load libc via ctypes.CDLL,
+ if all necessary functions are already found in libuuid.
+ Patch by Evgeny Sologubov.
-- Issue #18344: Fix potential ref-leaks in _bufferedreader_read_all().
+- The :envvar:`PYTHONFAULTHANDLER` environment variable now only enables the
+ faulthandler module if the variable is non-empty. Same behaviour than other
+ variables like :envvar:`PYTHONDONTWRITEBYTECODE`.
-- Issue #17872: Fix a segfault in marshal.load() when input stream returns
- more bytes than requested.
+- Issue #1565525: New function ``traceback.clear_frames`` will clear
+ the local variables of all the stack frames referenced by a traceback
+ object.
-- Issue #18426: Fix NULL pointer dereference in C extension import when
- PyModule_GetDef() returns an error.
-- Issue #18328: Reorder ops in PyThreadState_Delete*() functions. Now the
- tstate is first removed from TLS and then deallocated.
+Tests
+-----
-- Issue #18184: PyUnicode_FromFormat() and PyUnicode_FromFormatV() now raise
- OverflowError when an argument of %c format is out of range.
+- Issue #18952: Fix regression in support data downloads introduced when
+ test.support was converted to a package. Regression noticed by Zachary
+ Ware.
-- Issue #18137: Detect integer overflow on precision in float.__format__()
- and complex.__format__().
+IDLE
+----
-- Issue #18183: Fix various unicode operations on strings with large unicode
- codepoints.
++- Issue #18873: IDLE now detects Python source code encoding only in comment
++ lines.
+
-- Issue #18180: Fix ref leak in _PyImport_GetDynLoadWindows().
+- Issue #18988: The "Tab" key now works when a word is already autocompleted.
-- Issue #18038: SyntaxError raised during compilation sources with illegal
- encoding now always contains an encoding name.
+Documentation
+-------------
-- Issue #17644: Fix a crash in str.format when curly braces are used in square
- brackets.
+- Issue #17003: Unified the size argument names in the io module with common
+ practice.
-- Issue #17983: Raise a SyntaxError for a ``global __class__`` statement in a
- class body.
++Tools/Demos
++-----------
++
++- Issue #18873: 2to3 and the findnocoding.py script now detect Python source
++ code encoding only in comment lines.
++
+
+What's New in Python 3.4.0 Alpha 2?
+===================================
+
+Release date: 2013-09-09
+
+Core and Builtins
+-----------------
+
+- Issue #18942: sys._debugmallocstats() output was damaged on Windows.
+
+- Issue #18571: Implementation of the PEP 446: file descriptors and file
+ handles are now created non-inheritable; add functions
+ os.get/set_inheritable(), os.get/set_handle_inheritable() and
+ socket.socket.get/set_inheritable().
+
+- Issue #11619: The parser and the import machinery do not encode Unicode
+ filenames anymore on Windows.
+
+- Issue #18808: Non-daemon threads are now automatically joined when
+ a sub-interpreter is shutdown (it would previously dump a fatal error).
+
+- Remove supporting for compiling on systems without getcwd().
+
+- Issue #18774: Remove last bits of GNU PTH thread code and thread_pth.h.
+
+- Issue #18771: Add optimization to set object lookups to reduce the cost
+ of hash collisions. The core idea is to inspect a second key/hash pair
+ for each cache line retrieved.
+
+- Issue #16105: When a signal handler fails to write to the file descriptor
+ registered with ``signal.set_wakeup_fd()``, report an exception instead
+ of ignoring the error.
+
+- Issue #18722: Remove uses of the "register" keyword in C code.
+
+- Issue #18667: Add missing "HAVE_FCHOWNAT" symbol to posix._have_functions.
+
+- Issue #16499: Add command line option for isolated mode.
+
+- Issue #15301: Parsing fd, uid, and gid parameters for builtins
+ in Modules/posixmodule.c is now far more robust.
+
+- Issue #18368: PyOS_StdioReadline() no longer leaks memory when realloc()
+ fail.
-- Issue #17927: Frame objects kept arguments alive if they had been copied into
- a cell, even if the cell was cleared.
+- Issue #17934: Add a clear() method to frame objects, to help clean up
+ expensive details (local variables) and break reference cycles.
+
+- Issue #18780: %-formatting codes %d, %i, and %u now treat int-subclasses
+ as int (displays value of int-subclass instead of str(int-subclass) ).
Library
-------
projects / python / commitdiff