相关疑难解决方法(0)

我查看了Python文档提供的信息,但我仍然有点困惑.有人可以发布编写新文件的示例代码,然后使用pickle将字典转储到其中吗？

背景:我正在使用最小构造算法构建一个代表字典的trie.输入列表是4.3M utf-8字符串,按字典顺序排序.生成的图形是非循环的,最大深度为638个节点.我的脚本的第一行将递归限制设置为1100 sys.setrecursionlimit().

问题:我希望能够将我的trie序列化到磁盘,因此我可以将其加载到内存中而无需从头开始重建(大约22分钟).我曾经尝试都pickle.dump()和cPickle.dump(),用文本和二进制协议两种.每次,我得到一个如下所示的堆栈跟踪:

  File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/pickle.py", line 649, in save_dict
    self._batch_setitems(obj.iteritems())
  File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/pickle.py", line 663, in _batch_setitems
    save(v)
  File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/pickle.py", line 725, in save_inst
    save(stuff)
  File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/pickle.py", line 648, in save_dict
    self.memoize(obj)
RuntimeError: maximum recursion depth exceeded

我的数据结构相对简单: trie包含对开始状态的引用,并定义了一些方法. dfa_state包含布尔字段,字符串字段和从标签到状态的字典映射.

我对内部工作原理并不十分熟悉pickle- …