So, I'm currently trying to fix the regression in handling __class__ references in 3.3. The first step in this is unwinding the name change for the closure reference so it goes back to using "__class__" (instead of "@__class__") before finding a different way to fix #12370. As near as I can tell, my efforts are getting killed by the frozen instance of importlib: if I make the change in the straightforward fashion, the frozen copy of FindLoader.load_module() uses zero-argument super(), which tries to look up "@__class__", which fails, which means initialisation goes pear-shaped. I'm going to fix it in this case by tweaking importlib._bootstrap to avoid using zero-argument super() (with an unmodified core) before applying the changes, but yeah, be warned that you're in for some fun when tinkering with any construct used by importlib._bootstrap and end up doing something that involves changing the PYC magic number. Cheers, Nick. -- Nick Coghlan | ncoghlan at gmail.com | Brisbane, Australia
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