我是一位有用的助手，可以帮您进行文本翻译。以下是需要翻译的内容：
我有一段代码，在其中构建了一个庞大的树形结构，我需要将其保存以备后续使用。
不幸的是，似乎我无法对scipy.spatial.KDTree对象进行pickle处理。
事实上，当我运行这段代码时：
import pickle
import scipy.spatial
tree=scipy.spatial.KDTree([[1,2,3]])
pickle.dump(tree,open('tree.p','wb'))
我遇到了这个错误：
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib64/python2.7/pickle.py", line 1370, in dump
Pickler(file, protocol).dump(obj)
File "/usr/lib64/python2.7/pickle.py", line 224, in dump
self.save(obj)
File "/usr/lib64/python2.7/pickle.py", line 331, in save
self.save_reduce(obj=obj, *rv)
File "/usr/lib64/python2.7/pickle.py", line 419, in save_reduce
save(state)
File "/usr/lib64/python2.7/pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "/usr/lib64/python2.7/pickle.py", line 649, in save_dict
self._batch_setitems(obj.iteritems())
File "/usr/lib64/python2.7/pickle.py", line 663, in _batch_setitems
save(v)
File "/usr/lib64/python2.7/pickle.py", line 331, in save
self.save_reduce(obj=obj, *rv)
File "/usr/lib64/python2.7/pickle.py", line 401, in save_reduce
save(args)
File "/usr/lib64/python2.7/pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "/usr/lib64/python2.7/pickle.py", line 562, in save_tuple
save(element)
File "/usr/lib64/python2.7/pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "/usr/lib64/python2.7/pickle.py", line 748, in save_global
(obj, module, name)) pickle.PicklingError: Can't pickle <class 'scipy.spatial.kdtree.leafnode'>: it's not found as scipy.spatial.kdtree.leafnode
鉴于此，有没有办法将其pickle化？或者至少保存对象的一部分，以便快速重建树？否则，除了scipy.spatial.KDTree之外，还有其他快速选项吗？