diff options
Diffstat (limited to 'Doc/whatsnew')
| -rw-r--r-- | Doc/whatsnew/whatsnew22.tex | 79 |
1 files changed, 45 insertions, 34 deletions
diff --git a/Doc/whatsnew/whatsnew22.tex b/Doc/whatsnew/whatsnew22.tex index 7d2a867..f181dcf 100644 --- a/Doc/whatsnew/whatsnew22.tex +++ b/Doc/whatsnew/whatsnew22.tex @@ -3,7 +3,7 @@ % $Id$ \title{What's New in Python 2.2} -\release{0.02} +\release{0.03} \author{A.M. Kuchling} \authoraddress{\email{akuchlin@mems-exchange.org}} \begin{document} @@ -33,6 +33,7 @@ Reference Manual}, or to the PEP for a particular new feature. The final release of Python 2.2 is planned for October 2001. + %====================================================================== % It looks like this set of changes will likely get into 2.2, % so I need to read and digest the relevant PEPs. @@ -40,6 +41,8 @@ The final release of Python 2.2 is planned for October 2001. %XXX +% GvR's description at http://www.python.org/2.2/descrintro.html + %\begin{seealso} %\seepep{252}{Making Types Look More Like Classes}{Written and implemented @@ -47,6 +50,7 @@ The final release of Python 2.2 is planned for October 2001. %\end{seealso} + %====================================================================== \section{PEP 234: Iterators} @@ -183,6 +187,7 @@ by the Python Labs crew, mostly by GvR and Tim Peters.} \end{seealso} + %====================================================================== \section{PEP 255: Simple Generators} @@ -329,6 +334,7 @@ and Tim Peters, with other fixes from the Python Labs crew.} \end{seealso} + %====================================================================== \section{Unicode Changes} @@ -339,9 +345,9 @@ by supplying \longprogramopt{enable-unicode=ucs4} to the configure script. XXX explain surrogates? I have to figure out what the changes mean to users. -Since their introduction, Unicode strings (XXX and regular strings in -2.1?) have supported an \method{encode()} method to convert the -string to a selected encoding such as UTF-8 or Latin-1. A symmetric +Since their introduction, Unicode strings have supported an +\method{encode()} method to convert the string to a selected encoding +such as UTF-8 or Latin-1. A symmetric \method{decode(\optional{\var{encoding}})} method has been added to both 8-bit and Unicode strings in 2.2, which assumes that the string is in the specified encoding and decodes it. This means that @@ -372,6 +378,7 @@ end References: http://mail.python.org/pipermail/i18n-sig/2001-June/001107.html and following thread. + %====================================================================== \section{PEP 227: Nested Scopes} @@ -553,9 +560,10 @@ See \url{http://www.xmlrpc.com/} for more information about XML-RPC. %====================================================================== \section{Other Changes and Fixes} +% XXX update the patch and bug figures as we go As usual there were a bunch of other improvements and bugfixes scattered throughout the source tree. A search through the CVS change -logs finds there were XXX patches applied, and XXX bugs fixed; both +logs finds there were 43 patches applied, and 77 bugs fixed; both figures are likely to be underestimates. Some of the more notable changes are: @@ -585,6 +593,24 @@ changes are: been changed to use the new C-level interface. (Contributed by Fred L. Drake, Jr.) + % XXX is this explanation correct? + \item When presented with a Unicode filename on Windows, Python will + now correctly convert it to a string using the MBCS encoding. + Filenames on Windows are a case where Python's choice of ASCII as + the default encoding turns out to be an annoyance. + + This patch also adds \samp{et} as a format sequence to + \cfunction{PyArg_ParseTuple}; \samp{et} takes both a parameter and + an encoding name, and converts it to the given encoding if the + parameter turns out to be a Unicode string, or leaves it alone if + it's an 8-bit string, assuming it to already be in the desired + encoding. (This differs from the \samp{es} format character, which + assumes that 8-bit strings are in Python's default ASCII encoding + and converts them to the specified new encoding.) + + (Contributed by Mark Hammond with assistance from Marc-Andr\'e + Lemburg.) + \item The \file{Tools/scripts/ftpmirror.py} script now parses a \file{.netrc} file, if you have one. (Contributed by Mike Romberg.) @@ -601,38 +627,23 @@ changes are: \cfunction{PyRange_New()} function, \samp{repeat}, has also been deprecated. + \item There were a bunch of patches to the dictionary + implementation, mostly to fix potential core dumps if a dictionary + contains objects that sneakily changed their hash value, or mutated + the dictionary they were contained in. For a while python-dev fell + into a gentle rhythm of Michael Hudson finding a case that dump + core, Tim Peters fixing it, Michael finding another case, and round + and round it went. + \item On Windows, Python can now be compiled with Borland C thanks - to a number of patches contribued by Stephen Hansen. - - \item XXX C API: Reorganization of object calling - -The \cfunction{call_object()} function, originally in \file{ceval.c}, -begins a new life as the official API \cfunction{PyObject_Call()}. It -is also much simplified: all it does is call the \member{tp_call} -slot, or raise an exception if that's \NULL. - -%The subsidiary functions (call_eval_code2(), call_cfunction(), -%call_instance(), and call_method()) have all been moved to the file -%implementing their particular object type, renamed according to the -%local convention, and added to the type's tp_call slot. Note that -%call_eval_code2() became function_call(); the tp_slot for class -%objects now simply points to PyInstance_New(), which already has the -%correct signature. - -%Because of these moves, there are some more new APIs that expose -%helpers in ceval.c that are now needed outside: PyEval_GetFuncName(), -%PyEval_GetFuncDesc(), PyEval_EvalCodeEx() (formerly get_func_name(), -%get_func_desc(), and eval_code2(). - - \item XXX Add support for Windows using "mbcs" as the default - Unicode encoding when dealing with the file system. As discussed on - python-dev and in patch 410465. - - \item XXX Lots of patches to dictionaries; measure performance - improvement, if any. + to a number of patches contributed by Stephen Hansen. -\end{itemize} + \item On platforms where Python uses the C \cfunction{dlopen()} function + to load extension modules, it's now possible to set the flags used + by \cfunction{dlopen()} using the \function{sys.getdlopenflags()} and + \function{sys.setdlopenflags()} functions. (Contributed by Bram Stolk.) +\end{itemize} %====================================================================== |