import ctypes, struct, sys, os while 1: os.system('python /Users/pabstersac/Desktop/Python\ Files/crash.py') inner = () outer = (inner,) c_outer = (ctypes.c_char * sys.getsizeof(outer)).from_address(id(outer)) inner_index = c_outer[:].find(struct.pack('P', id(inner))) c_outer[inner_index:inner_index+struct.calcsize('P')] = struct.pack('P', id(outer)) print outer #construct and print a self-referencing tuple