Neal Norwitz wrote: > While running regrtest with -R to find reference leaks I found a usage > issue. When a codec is registered it is stored in the interpreter > state and cannot be removed. Since it is stored as a list, if you > repeated add the same search function, you will get duplicates in the > list and they can't be removed. This shows up as a reference leak > (which it really isn't) in test_unicode with this code modified from > test_codecs_errors: > > import codecs > def search_function(encoding): > def encode1(input, errors="strict"): > return 42 > return (encode1, None, None, None) > > codecs.register(search_function) > > ### > > Should the search function be added to the search path if it is > already in there? I don't understand a benefit of having duplicate > search functions.
Me neither :-) I never expected someone to register a search function more than once, since there's no point in doing so. > Should users have access to the search path (through a > codecs.unregister())? Maybe, but why would you want to unregister a search function ? > If so, should it search from the end of the > list to the beginning to remove an item? That way the last entry > would be removed rather than the first. I'd suggest to raise an exception in case a user tries to register a search function twice. Removal should be the same as doing list.remove(), ie. remove the first (and only) item in the list of search functions. -- Marc-Andre Lemburg eGenix.com Professional Python Services directly from the Source (#1, Nov 24 2005) >>> Python/Zope Consulting and Support ... http://www.egenix.com/ >>> mxODBC.Zope.Database.Adapter ... http://zope.egenix.com/ >>> mxODBC, mxDateTime, mxTextTools ... http://python.egenix.com/ ________________________________________________________________________ ::: Try mxODBC.Zope.DA for Windows,Linux,Solaris,FreeBSD for free ! :::: _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
