你想做什么？这个对我有用：
class A(object): def __init__(self): self.val = 100 def __str__(self): """What a looks like if your print it""" return 'A:'+str(self.val)import picklea = A()a_pickled = pickle.dumps(a)a.val = 200a2 = pickle.loads(a_pickled)print 'the original a'print aprint # newlineprint 'a2 - a clone of a before we changed the value'print a2printprint 'Why are you trying to use __setstate__, not __init__?'print
所以这将打印：
the original aA:200a2 - a clone of a before we changed the valueA:100
如果需要setstate：
class B(object): def __init__(self): print 'Perhaps __init__ must not happen twice?' print self.val = 100 def __str__(self): """What a looks like if your print it""" return 'B:'+str(self.val) def __getstate__(self): return self.val def __setstate__(self,val): self.val = valb = B()b_pickled = pickle.dumps(b)b.val = 200b2 = pickle.loads(b_pickled)print 'the original b'print bprint # newlineprint 'b2 - b clone of b before we changed the value'print b2
打印：
Why are you trying to use __setstate__, not __init__?Perhaps __init__ must not happen twice?the original bB:200b2 - b clone of b before we changed the valueB:100
