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March 2010

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92 discussions

Update xml.etree.ElementTree for Python 2.7 and 3.2
by Florent Xicluna Feb. 28, 2010

Feb. 28, 2010

Hello, On November 2006 and September 2007 Fredrik proposed to update "xml.etree" in Python 2.6 with the upcoming version 1.3. Now we are three years later, and the version shipped with 2.7alpha3 is 1.2.6. http://bugs.python.org/issue1602189#msg54944 http://bugs.python.org/issue1143 This would not be an issue, without the numerous bug reports accumulating on bugs.python.org. Most of these reports are waiting for the 1.3 release. Three months ago I worked on some of these issues, and after fixing them separately, I proposed a patch which merges the latest 1.3 snapshot (released in 2007) within the standard library. The aim is to provide a bug-free version of ElementTree/cElementTree in the standard library. For this purpose, I grew the test suite from 300 lines to 1800 lines, using both the tests from upstream and the tests proposed by Neil Muller on issue #6232. To ensure consistency, now the test_suite for the C implementation is the same as the Python implementation. http://bugs.python.org/issue6472 We are still interested with the upcoming release of ElementTree, but we should adopt a pragmatic approach: the xml.etree.ElementTree needs to be fixed for all Python users, even if 1.3 is not ready before 2.7beta. This is the only purpose of the patch. The patch sticks as much as possible to the upstream library. Initially I kept all the new features of the 1.3 branch in the patch. It should ease the integration of 1.3 final when it is released. With the last comment from Fredrik, I think to be more conservative: I plan to split out the experimental C API from the package. It is not required for the bug-fix release, and there's some risk of incompatibility with the final design of the API, which is still secret. As a side-effect, the patch will add some features and methods from the 1.3 branch (some of them where requested in the bug tracker): - ET.fromstringlist(), ET.tostringlist() - Element.extend(), Element.iter(), Element.itertext() - new selector engine - extended slicing However the highlighted features of this patch are: - to fix many bugs which were postponed because of 1.3 release - to ensure consistency between C and Python implementations (with tests) - to provide a better test coverage The patch is uploaded on Rietveld for review. The 3.x version of the patch will be updated after 2.x is merged in trunk. The patch covers documentation, too. http://codereview.appspot.com/207048/show It's time to comment and review. The proposed plan is to merge the patch in trunk before 2.7 alpha4. Best regards, -- Florent Xicluna

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Re: [Python-Dev] __file__
by Bugbee, Larry Feb. 28, 2010

Feb. 28, 2010

Greg Ewing <greg.ewing(a)canterbury.ac.nz> wrote: > Having .py files around that aren't source text could lead > to a lot of confusion, given that most platforms these days > decide which application to open for a given file based > solely on the filename extension. I wouldn't enjoy trying > to open a .py file only to have my text editor blow up > because it was actually a binary file. > > So on balance I think it's a bit too kooky for my taste. +1 Add to that the inverse... I will cleanup directories based on the suffix keeping the .py and deleting .pyc and .pyo. Overloading a source file suffix is not good. Larry

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