New submission from Brett Cannon: People keep asking and I keep promising to get a lazy loader into Python 3.4. This issue is for me to track what I have done towards meeting that promise.
To start, I have something working at https://code.google.com/p/importers/, but I need to make sure that the code copies any newly assigned objects post-import but before completing an attribute read:: import lazy_mod lazy_mod.attr = True # Does not have to trigger import, although there is nothing wrong if it did. lazy_mod.func() # Since it might depend on 'attr', don't return attr until after import and 'attr' with a value of True has been set. Also need to see if anything can be done about isinstance/issubclass checks as super() is used for assigning to __loader__ and thus might break checks for ABCs. Maybe create a class from scratch w/o the mixin somehow (which I don't see from looking at http://docs.python.org/3.4/library/types.html#module-types w/o re-initializing everything)? Somehow get __subclasscheck__() on the super() class? Some other crazy solution that avoids having to call __init__() a second time? ---------- assignee: brett.cannon components: Library (Lib) messages: 185852 nosy: brett.cannon priority: low severity: normal stage: test needed status: open title: Create a lazy import loader mixin type: enhancement versions: Python 3.4 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue17621> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
