> print a.c # None > print a.ref_b # <weakref at 0x???? to 'instance' at 0x????>, > references to pickled instances should be unpickled gracefully > print a.ref_c # <weakref at ????; dead>, references to other (not > pickled) instances should be unpickled as a dead reference > Sorry, "print a.c" was a mistake. Laci 1.0