1 """ 2 _PyType_Lookup() returns a borrowed reference. 3 This attacks the call in dictobject.c. 4 """ 5 6 class A(object): 7 pass 8 9 class B(object): 10 def __del__(self): 11 print 'hi' 12 del D.__missing__ 13 14 class D(dict): 15 class __missing__: 16 def __init__(self, *args): 17 pass 18 19 20 d = D() 21 a = A() 22 a.cycle = a 23 a.other = B() 24 del a 25 26 prev = None 27 while 1: 28 d[5] 29 prev = (prev,) 30
