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g.brandl at gmx Apr 14, 2012, 12:37 PM Views: 303 Permalink Re: importlib is now bootstrapped (and what that means) [In reply to] On 14.04.2012 20:12, Brett Cannon wrote: > My multi-year project -- started in 2006 according to my blog -- to rewrite > import in pure Python and then bootstrap it into CPython as *the* implementation > of __import__() is finally over (mostly)! Hopefully I didn't break too much code > in the process. =) > > Now this is "mostly" finished because the single incompatibility that importlib > has is that it doesn't check the Windows registry for paths to search since I > lack a Windows installation to develop and test on. If someone can tackle that > issue that would be greatly appreciated (http://bugs.python.org/issue14578). > > Next up is how to maintain/develop for all of this. So the Makefile will > regenerate Python/importlib.h whenever Lib/importlib/_bootstrap.py or > Python/freeze_importlib.py changes. So if you make a change to importlib make > sure to get it working and tested before running 'make' again else you will > generate a bad frozen importlib (if you do mess up you can also revert the > changes to importlib.h and re-run make; a perk to having importlib.h checked > in). Otherwise keep in mind that you can't use any module that isn't a builtin > (sys.builtin_module_names) in importlib._bootstrap since you can't import > something w/o import working. =) We've just now talked on IRC about this regeneration. Since both files -- _bootstrap.py and importlib.h -- are checked in, a make run can try to re- generate importlib.h. This depends on the timestamps of the two files, which I don't think Mercurial makes any guarantees about. We have other instances of this (e.g. the Objects/typeslots.inc file is generated and checked in), but in the case of importlib, we have to use the ./python binary for freezing to avoid bytecode incompatibilities, which obviously is a problem if ./python isn't built yet. > And the only outstanding point of contention in all of this is that some people > don't like having freeze_importlib.py in Python/ and instead want it in Tools/. > I didn't leave it in Tools/ as I have always viewed that Python should build w/o > the Tools directory, but maybe the Linux distros actually ship with it and thus > this is an unneeded worry. Plus the scripts to generate the AST are in Parser so > there is precedent for what I have done. I would have no objections to Python/. There is also e.g. Objects/typeslots.py. Georg _______________________________________________ Python-Dev mailing list Python-Dev [at] python http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/list-python-dev%40lists.gossamer-threads.com

Subject User Time importlib is now bootstrapped (and what that means) brett at python Apr 14, 2012, 11:12 AM     Re: importlib is now bootstrapped (and what that means) g.brandl at gmx Apr 14, 2012, 12:37 PM         Re: importlib is now bootstrapped (and what that means) martin at v Apr 16, 2012, 7:07 AM             Re: importlib is now bootstrapped (and what that means) brett at python Apr 16, 2012, 8:21 AM             Re: importlib is now bootstrapped (and what that means) stefan_ml at behnel Apr 16, 2012, 12:17 PM                 Re: importlib is now bootstrapped (and what that means) amauryfa at gmail Apr 16, 2012, 1:43 PM     Re: importlib is now bootstrapped (and what that means) stefan_ml at behnel Apr 16, 2012, 12:54 AM         Re: importlib is now bootstrapped (and what that means) solipsis at pitrou Apr 16, 2012, 4:13 AM             Re: importlib is now bootstrapped (and what that means) stefan_ml at behnel Apr 16, 2012, 4:49 AM     Re: importlib is now bootstrapped (and what that means) rdmurray at bitdance Apr 16, 2012, 9:15 AM         Re: importlib is now bootstrapped (and what that means) solipsis at pitrou Apr 16, 2012, 9:31 AM             Re: importlib is now bootstrapped (and what that means) brett at python Apr 16, 2012, 9:40 AM         Re: importlib is now bootstrapped (and what that means) martin at v Apr 16, 2012, 10:04 AM             Re: importlib is now bootstrapped (and what that means) brett at python Apr 16, 2012, 10:32 AM         Re: importlib is now bootstrapped (and what that means) g.brandl at gmx Apr 16, 2012, 4:11 PM             Re: importlib is now bootstrapped (and what that means) solipsis at pitrou Apr 16, 2012, 5:27 PM                 Re: importlib is now bootstrapped (and what that means) brett at python Apr 16, 2012, 5:41 PM                 Re: importlib is now bootstrapped (and what that means) stefan_ml at behnel Apr 16, 2012, 10:12 PM             Re: importlib is now bootstrapped (and what that means) rdmurray at bitdance Apr 17, 2012, 5:18 AM     Re: importlib is now bootstrapped (and what that means) martin at v Apr 16, 2012, 10:08 AM         Re: importlib is now bootstrapped (and what that means) brett at python Apr 16, 2012, 10:33 AM     Re: importlib is now bootstrapped (and what that means) solipsis at pitrou Apr 16, 2012, 10:44 AM         Re: importlib is now bootstrapped (and what that means) barry at python Apr 16, 2012, 10:51 AM             Re: importlib is now bootstrapped (and what that means) rdmurray at bitdance Apr 16, 2012, 11:38 AM         Re: importlib is now bootstrapped (and what that means) martin at v Apr 16, 2012, 2:12 PM     Re: importlib is now bootstrapped (and what that means) ericsnowcurrently at gmail Apr 16, 2012, 10:45 AM     Re: importlib is now bootstrapped (and what that means) stefan_ml at behnel Apr 16, 2012, 10:05 PM     Re: importlib is now bootstrapped (and what that means) solipsis at pitrou Apr 17, 2012, 2:52 AM         Re: importlib is now bootstrapped (and what that means) eric at trueblade Apr 17, 2012, 3:43 AM             Re: importlib is now bootstrapped (and what that means) brett at python Apr 17, 2012, 8:41 AM     Re: importlib is now bootstrapped (and what that means) solipsis at pitrou Apr 17, 2012, 10:39 AM         Re: importlib is now bootstrapped (and what that means) brett at python Apr 17, 2012, 12:52 PM     Re: importlib is now bootstrapped (and what that means) eric at trueblade Apr 20, 2012, 6:54 AM         Re: importlib is now bootstrapped (and what that means) brett at python Apr 20, 2012, 7:59 AM         Re: importlib is now bootstrapped (and what that means) ericsnowcurrently at gmail Apr 20, 2012, 8:02 AM     Re: importlib is now bootstrapped (and what that means) brett at python Apr 20, 2012, 8:04 AM     Re: importlib is now bootstrapped (and what that means) eric at trueblade Apr 20, 2012, 8:07 AM

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