Hello, I have proposed a new generator finalization scheme in http://bugs.python.org/issue17807: it removes the tp_del from generator objects, instead electing to cleanup the generator (equivalent of calling close()) in the frame's tp_clean function. This way, generators with a try / finally block can be finalized even when they are part of reference cycles. This has stemmed from http://bugs.python.org/issue17468, which mentions a memory leak in Django due to uncollectable generators. Feedback welcome. Regards Antoine.