Author: Antonio Cuni <anto.c...@gmail.com> Branch: extradoc Changeset: r4111:53e7a4950bba Date: 2012-03-01 20:32 +0100 http://bitbucket.org/pypy/extradoc/changeset/53e7a4950bba/
Log: draft for a new blog post diff --git a/blog/draft/py3k-status-update-1.rst b/blog/draft/py3k-status-update-1.rst --- a/blog/draft/py3k-status-update-1.rst +++ b/blog/draft/py3k-status-update-1.rst @@ -1,4 +1,5 @@ -Hello, +Py3k status update +------------------ Thank to all the people who donated_ to the `py3k proposal`_, we managed to collect enough money to start to work on the first step. This is a quick @@ -45,6 +46,7 @@ .. _donated: http://morepypy.blogspot.com/2012/01/py3k-and-numpy-first-stage-thanks-to.html .. _`py3k proposal`: http://pypy.org/py3donate.html +.. _`py3k branch`: https://bitbucket.org/pypy/pypy/src/py3k .. _`Leysin sprint`: http://morepypy.blogspot.com/2011/12/leysin-winter-sprint.html .. _`py3k tests nightly`: http://buildbot.pypy.org/summary?branch=py3k .. _`lexical exception handlers`: http://bugs.python.org/issue3021 diff --git a/blog/draft/py3k-status-update-2.rst b/blog/draft/py3k-status-update-2.rst new file mode 100644 --- /dev/null +++ b/blog/draft/py3k-status-update-2.rst @@ -0,0 +1,57 @@ +Py3k status update #2 +--------------------- + +This is the second status update about my work on the `py3k branch`_, which I +can do thank to all the people who donated_ to the `py3k proposal`_. + +Since my previous `status update`_, things improved a lot: first of all, I +fixed the syntax of many more tests, which were failing on the branch because +they used constructs which are no longer valid in Python 3, such as ``u''`` +strings, the ``print`` statement or the old ``except Exception, e`` syntax. I +have to say that this work is tedious and not very rewarding, but it has to be +done anyway, so that the real failures can stand up. + +Then, I spent most of the rest of the time by killing features which are +present in Python 2 and are gone in Python 3. + +Some of them were easy and mechnical: for example, I removed all the function +attributes such as ``func_code`` and ``func_closure``, which has been renamed +to ``__code__`` and ``__closure__``, and then I had to find and fix all the +places which still expeted the old ones. + +Some were trickier: I removed support for the ``cmp`` function and the +``__cmp__`` special method, but this also meant that I had to fix a few types +which relied on it to be comparable (for example, did you know that the cells +contained in ``__closure__`` are comparable?). At the same time, I also +removed the old behavior which in Python 2 allows us to compare arbitrary +objects with ``<``, ``>`` & co.: in Python 3 the only comparisons allowed +between incompatible types are ``==`` and ``!=``. + +Speaking of old special methods, ``__hex__`` and ``__oct__`` are gone as well +(and I didn't even know about their existence before removing them :-)) + +But the most important breakthrough was the removal of the ``_file`` module, +containing the implementation of the ``file`` type in Python 2, which is now +gone since in Python 3 files are handled by the ``_io`` module. Killing the +module was not straightforward, becase some of the importing logic was tightly +tied to the internal implementation of files, so it needed some refactoring. +Finally, I had to fix the ``marshal`` module to correctly detect text files +vs. byte files. + +Among these things, I fixed tons of smaller issues here and there. As a +result, there are much less failing tests than few weeks ago. Obviously the +number itself does not mean much, because sometimes fixing a single test takes +hours, and some other times by changing one line you fix tens of tests. But at +the end, seeing it dropping from 999 to 650_ is always nice :-). + +The road for having a pypy3k is still long, but everything is going fine so +far. Stay tuned for more updates! + +cheers, +Antonio + +.. _donated: http://morepypy.blogspot.com/2012/01/py3k-and-numpy-first-stage-thanks-to.html +.. _`py3k proposal`: http://pypy.org/py3donate.html +.. _`py3k branch`: https://bitbucket.org/pypy/pypy/src/py3k +.. _`status update`: http://morepypy.blogspot.com/2012/02/py3k-status-update.html +.. _650: http://buildbot.pypy.org/summary?category=linux32&branch=py3k&recentrev=53071:411bb6d819b1 _______________________________________________ pypy-commit mailing list pypy-commit@python.org http://mail.python.org/mailman/listinfo/pypy-commit
