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| Title: Python 2.4 Release Schedule | |
| Version: $Revision$ | |
| Last-Modified: $Date$ | |
| Author: Barry Warsaw, Raymond Hettinger, Anthony Baxter | |
| Status: Final | |
| Type: Informational | |
| Content-Type: text/x-rst | |
| Created: 29-Jul-2003 | |
| Python-Version: 2.4 | |
| Post-History: 1-Dec-2004 | |
| Abstract | |
| ======== | |
| This document describes the development and release schedule for | |
| Python 2.4. The schedule primarily concerns itself with PEP-sized | |
| items. Small features may be added up to and including the first | |
| beta release. Bugs may be fixed until the final release. | |
| There will be at least two alpha releases, two beta releases, and | |
| one release candidate. The release date was 30th November, 2004. | |
| Release Manager | |
| =============== | |
| Anthony Baxter | |
| Martin von Lowis is building the Windows installers, Fred the | |
| doc packages, Sean the RPMs. | |
| Release Schedule | |
| ================ | |
| - July 9: alpha 1 [completed] | |
| - August 5/6: alpha 2 [completed] | |
| - Sept 3: alpha 3 [completed] | |
| - October 15: beta 1 [completed] | |
| - November 3: beta 2 [completed] | |
| - November 18: release candidate 1 [completed] | |
| - November 30: final [completed] | |
| Completed features for 2.4 | |
| ========================== | |
| - PEP 218 Builtin Set Objects. | |
| - PEP 289 Generator expressions. | |
| - PEP 292 Simpler String Substitutions to be implemented as a module. | |
| - PEP 318: Function/method decorator syntax, using @syntax | |
| - PEP 322 Reverse Iteration. | |
| - PEP 327: A Decimal package for fixed precision arithmetic. | |
| - PEP 328: Multi-line Imports | |
| - Encapsulate the decorate-sort-undecorate pattern in a keyword for | |
| ``list.sort()``. | |
| - Added a builtin called ``sorted()`` which may be used in expressions. | |
| - The ``itertools`` module has two new functions, ``tee()`` and ``groupby()``. | |
| - Add a ``collections`` module with a ``deque()`` object. | |
| - Add two statistical/reduction functions, ``nlargest()`` and ``nsmallest()`` | |
| to the ``heapq`` module. | |
| - Python's windows installer now uses MSI | |
| Deferred until 2.5 | |
| ================== | |
| - Deprecate and/or remove the modules listed in PEP 4 (``posixfile``, | |
| ``gopherlib``, ``pre``, ``others``) | |
| - Remove support for platforms as described in PEP 11. | |
| - Finish implementing the Distutils ``bdist_dpkg`` command. (AMK) | |
| - Add support for reading shadow passwords [1]_ | |
| - It would be nice if the built-in SSL socket type could be used | |
| for non-blocking SSL I/O. Currently packages such as Twisted | |
| which implement async servers using SSL have to require third-party | |
| packages such as pyopenssl. | |
| - AST-based compiler: this branch was not completed in time for | |
| 2.4, but will land on the trunk some time after 2.4 final is | |
| out, for inclusion in 2.5. | |
| - reST is going to be used a lot in Zope3. Maybe it could become | |
| a standard library module? (Since reST's author thinks it's too | |
| instable, I'm inclined not to do this.) | |
| Ongoing tasks | |
| ============= | |
| The following are ongoing TO-DO items which we should attempt to | |
| work on without hoping for completion by any particular date. | |
| - Documentation: complete the distribution and installation | |
| manuals. | |
| - Documentation: complete the documentation for new-style | |
| classes. | |
| - Look over the ``Demos/`` directory and update where required (Andrew | |
| Kuchling has done a lot of this) | |
| - New tests. | |
| - Fix doc bugs on SF. | |
| - Remove use of deprecated features in the core. | |
| - Document deprecated features appropriately. | |
| - Mark deprecated C APIs with ``Py_DEPRECATED``. | |
| - Deprecate modules which are unmaintained, or perhaps make a new | |
| category for modules 'Unmaintained' | |
| - In general, lots of cleanup so it is easier to move forward. | |
| Open issues | |
| =========== | |
| None at this time. | |
| Carryover features from Python 2.3 | |
| ================================== | |
| - The import lock could use some redesign. [2]_ | |
| - A nicer API to open text files, replacing the ugly (in some | |
| people's eyes) "U" mode flag. There's a proposal out there to | |
| have a new built-in type ``textfile(filename, mode, encoding)``. | |
| (Shouldn't it have a *bufsize* argument too?) | |
| - New widgets for Tkinter??? | |
| Has anyone gotten the time for this? *Are* there any new | |
| widgets in Tk 8.4? Note that we've got better Tix support | |
| already (though not on Windows yet). | |
| - PEP 304 (Controlling Generation of Bytecode Files by Montanaro) | |
| seems to have lost steam. | |
| - For a class defined inside another class, the ``__name__`` should be | |
| "outer.inner", and pickling should work. ([3]_. I'm no | |
| longer certain this is easy or even right.) | |
| - Decide on a clearer deprecation policy (especially for modules) | |
| and act on it. For a start, see this message from Neal Norwitz [4]_. | |
| There seems insufficient interest in moving this further in an | |
| organized fashion, and it's not particularly important. | |
| - Provide alternatives for common uses of the ``types`` module; | |
| Skip Montanaro has posted a proto-PEP for this idea [5]_. | |
| There hasn't been any progress on this, AFAICT. | |
| - Use pending deprecation for the ``types`` and ``string`` modules. This | |
| requires providing alternatives for the parts that aren't | |
| covered yet (e.g. ``string.whitespace`` and ``types.TracebackType``). | |
| It seems we can't get consensus on this. | |
| - PEP 262 Database of Installed Python Packages (Kuchling) | |
| This turns out to be useful for Jack Jansen's Python installer, | |
| so the database is worth implementing. Code will go in | |
| sandbox/pep262. | |
| - PEP 269 Pgen Module for Python (Riehl) | |
| (Some necessary changes are in; the ``pgen`` module itself needs to | |
| mature more.) | |
| - PEP 266 Optimizing Global Variable/Attribute Access (Montanaro) | |
| PEP 267 Optimized Access to Module Namespaces (Hylton) | |
| PEP 280 Optimizing access to globals (van Rossum) | |
| These are basically three friendly competing proposals. Jeremy | |
| has made a little progress with a new compiler, but it's going | |
| slowly and the compiler is only the first step. Maybe we'll be | |
| able to refactor the compiler in this release. I'm tempted to | |
| say we won't hold our breath. | |
| - Lazily tracking tuples? [6]_ [7]_ | |
| Not much enthusiasm I believe. | |
| - PEP 286 Enhanced Argument Tuples (von Loewis) | |
| I haven't had the time to review this thoroughly. It seems a | |
| deep optimization hack (also makes better correctness guarantees | |
| though). | |
| - Make '``as``' a keyword. It has been a pseudo-keyword long enough. | |
| Too much effort to bother. | |
| References | |
| ========== | |
| .. [1] Shadow Password Support Module | |
| https://bugs.python.org/issue579435 | |
| .. [2] PyErr_Warn may cause import deadlock | |
| https://bugs.python.org/issue683658 | |
| .. [3] Nested class __name__ | |
| https://bugs.python.org/issue633930 | |
| .. [4] Neal Norwitz, random vs whrandom | |
| https://mail.python.org/pipermail/python-dev/2002-April/023165.html | |
| .. [5] Skip Montanaro, python/dist/src/Lib types.py,1.26,1.27 | |
| https://mail.python.org/pipermail/python-dev/2002-May/024346.html | |
| .. [6] Daniel Dunbar, Lazily GC tracking tuples | |
| https://mail.python.org/pipermail/python-dev/2002-May/023926.html | |
| .. [7] GC: untrack simple objects | |
| https://bugs.python.org/issue558745 | |
| Copyright | |
| ========= | |
| This document has been placed in the public domain. | |
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