All the news that's fit to print. In other words, it's 1.5.2a2 time.
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Guido van Rossum
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Misc/NEWS
273
Misc/NEWS
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@ -1,9 +1,8 @@
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What's new in this release?
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===========================
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Below is a list of all relevant changes since release 1.4. The
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sections are now in a more useful order: the most recent changes are
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listed first.
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Below is a list of all relevant changes since release 1.4. The most
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recent changes are listed first.
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A note on attributions: while I have sprinkled some names throughout
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here, I'm grateful to many more people who remain unnamed. You may
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@ -14,6 +13,274 @@ credit, let me know and I'll add you to the list!
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======================================================================
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From 1.5.2a1 to 1.5.2a2
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=======================
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General
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-------
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- It is now a syntax error to have a function argument without a
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default following one with a default.
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- __file__ is now set to the .py file if it was parsed (it used to
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always be the .pyc/.pyo file).
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- Don't exit with a fatal error during initialization when there's a
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problem with the exceptions.py module.
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- New environment variable PYTHONOPTIMIZE can be used to set -O.
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- New version of python-mode.el for Emacs.
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Miscellaneous fixed bugs
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------------------------
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- No longer print the (confusing) error message about stack underflow
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while compiling.
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- Some threading and locking bugs fixed.
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- When errno is zero, report "Error", not "Success".
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Documentation
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-------------
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- Documentation will be released separately.
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- Doc strings added to array and md5 modules by Chris Petrilli.
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Ports and build procedure
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-------------------------
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- Stop installing when a move or copy fails.
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- New version of the OS/2 port code by Jeff Rush.
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- The makesetup script handles absolute filenames better.
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- The 'new' module is now enabled by default in the Setup file.
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- I *think* I've solved the problem with the Linux build blowing up
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sometimes due to a conflict between sigcheck/intrcheck and
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signalmodule.
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Built-in functions
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------------------
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- The second argument to apply() can now be any sequence, not just a
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tuple.
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Built-in types
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--------------
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- Lists have a new method: L1.extend(L2) is equivalent to the common
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idiom L1[len(L1):] = L2.
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- Better error messages when a sequence is indexed with a non-integer.
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- Bettter error message when calling a non-callable object (include
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the type in the message).
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Python services
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---------------
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- New version of cPickle.c fixes some bugs.
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- pickle.py: improved instantiation error handling.
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- code.py: reworked quite a bit. New base class
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InteractiveInterpreter and derived class InteractiveConsole. Fixed
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several problems in compile_command().
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- py_compile.py: print error message and continue on syntax errors.
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Also fixed an old bug with the fstat code (it was never used).
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- pyclbr.py: support submodules of packages.
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String Services
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---------------
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- StringIO.py: raise the right exception (ValueError) for attempted
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I/O on closed StringIO objects.
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- re.py: fixed a bug in subn(), which caused .groups() to fail inside
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the replacement function called by sub().
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- The struct module has a new format 'P': void * in native mode.
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Generic OS Services
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-------------------
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- Module time: Y2K robustness. 2-digit year acceptance depends on
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value of time.accept2dyear, initialized from env var PYTHONY2K,
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default 0. Years 00-68 mean 2000-2068, while 69-99 mean 1969-1999
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(POSIX or X/Open recommendation).
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- os.path: normpath(".//x") should return "x", not "/x".
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- getpass.py: fall back on default_getpass() when sys.stdin.fileno()
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doesn't work.
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- tempfile.py: regenerate the template after a fork() call.
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Optional OS Services
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--------------------
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- In the signal module, disable restarting interrupted system calls
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when we have siginterrupt().
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Debugger
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--------
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- No longer set __args__; this feature is no longer supported and can
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affect the debugged code.
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- cmd.py, pdb.py and bdb.py have been overhauled by Richard Wolff, who
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added aliases and some other useful new features, e.g. much better
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breakpoint support: temporary breakpoint, disabled breakpoints,
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breakpoints with ignore counts, and conditions; breakpoints can be set
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on a file before it is loaded.
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Profiler
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--------
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- Changes so that JPython can use it. Also fix the calibration code
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so it actually works again
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.
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Internet Protocols and Support
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------------------------------
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- imaplib.py: new version from Piers Lauder.
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- smtplib.py: change sendmail() method to accept a single string or a
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list or strings as the destination (commom newbie mistake).
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- poplib.py: LIST with a msg argument fixed.
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- urlparse.py: some optimizations for common case (http).
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- urllib.py: support content-length in info() for ftp protocol;
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support for a progress meter through a third argument to
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urlretrieve(); commented out gopher test (the test site is dead).
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Internet Data handling
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----------------------
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- sgmllib.py: support tags with - or . in their name.
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- mimetypes.py: guess_type() understands 'data' URLs.
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Restricted Execution
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--------------------
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- The classes rexec.RModuleLoader and rexec.RModuleImporter no
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longer exist.
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Tkinter
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-------
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- When reporting an exception, store its info in sys.last_*. Also,
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write all of it to stderr.
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- Added NS, EW, and NSEW constants, for grid's sticky option.
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- Fixed last-minute bug in 1.5.2a1 release: need to include "mytime.h".
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- Make bind variants without a sequence return a tuple of sequences
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(formerly it returned a string, which wasn't very convenient).
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- Add image commands to the Text widget (these are new in Tk 8.0).
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- Added new listbox and canvas methods: {xview,yview}_{scroll,moveto}.)
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- Improved the thread code (but you still can't call update() from
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another thread on Windows).
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- Fixed unnecessary references to _default_root in the new dialog
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modules.
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- Miscellaneous problems fixed.
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Windows General
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---------------
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- Call LoadLibraryEx(..., ..., LOAD_WITH_ALTERED_SEARCH_PATH) to
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search for dependent dlls in the directory containing the .pyd.
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- In debugging mode, call DebugBreak() in Py_FatalError().
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Windows Installer
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-----------------
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- Install zlib.dll in the DLLs directory instead of in the win32
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system directory, to avoid conflicts with other applications that have
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their own zlib.dll.
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Test Suite
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----------
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- test_long.py: new test for long integers, by Tim Peters.
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- regrtest.py: improved so it can be used for other test suites as
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well.
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- test_strftime.py: use re to compare test results, to support legal
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variants (e.g. on Linux).
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Tools and Demos
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---------------
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- Four new scripts in Tools/scripts: crlf.py and lfcr.py (to
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remove/add Windows style '\r\n' line endings), untabify.py (to remove
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tabs), and rgrep.yp (reverse grep).
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- Improvements to Tools/freeze/. Each Python module is now written to
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its own C file. This prevents some compilers or assemblers from
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blowing up on large frozen programs, and saves recompilation time if
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only a few modules are changed. Other changes too, e.g. new command
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line options -x and -i.
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- Much improved (and smaller!) version of Tools/scripts/mailerdaemon.py.
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Python/C API
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------------
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- New mechanism to support extensions of the type object while
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remaining backward compatible with extensions compiled for previous
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versions of Python 1.5. A flags field indicates presence of certain
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fields.
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- Addition to the buffer API to differentiate access to bytes and
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8-bit characters (in anticipation of Unicode characters).
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- New argument parsing format t# ("text") to indicate 8-bit
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characters; s# simply means 8-bit bytes, for backwards compatibility.
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- New object type, bufferobject.c is an example and can be used to
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create buffers from memory.
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- Some support for 64-bit longs, including some MS platforms.
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- Many calls to fprintf(stderr, ...) have been replaced with calls to
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PySys_WriteStderr(...).
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- The calling context for PyOS_Readline() has changed: it must now be
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called with the interpreter lock held! It releases the lock around
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the call to the function pointed to by PyOS_ReadlineFunctionPointer
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(default PyOS_StdioReadline()).
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- New APIs PyLong_FromVoidPtr() and PyLong_AsVoidPtr().
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- Renamed header file "thread.h" to "pythread.h".
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- The code string of code objects may now be anything that supports the
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buffer API.
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======================================================================
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From 1.5.1 to 1.5.2a1
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=====================
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