[BioPython] NeighborSearch (No module named _CKDTree)

[ARTURAS ZIEMYS]

HI, 

I've got a problem with 'NeighborSearch' (python 2.4.2, Biopython 1.41, Windows XP-SP2). I need to find the nearest atoms for my structure, but I can not use 'NeighborSearch'. There something wrong in distribution ? 

For example , when I tray to import 'NeighborSearch' in a shell : 

IDLE 1.1.2 ==== No Subprocess ==== 
>>> from Bio.PDB.NeighborSearch import NeighborSearch 
Traceback (most recent call last): 
File "<pyshell#0>", line 1, in ? 
from Bio.PDB.NeighborSearch import NeighborSearch 
File "C:\Python24\Lib\site-packages\Bio\PDB\NeighborSearch.py", line 3, in ? 
from Bio.KDTree import * 
File "C:\Python24\Lib\site-packages\Bio\KDTree\__init__.py", line 10, in ? 
from KDTree import KDTree 
File "C:\Python24\Lib\site-packages\Bio\KDTree\KDTree.py", line 17, in ? 
import CKDTree 
File "C:\Python24\Lib\site-packages\Bio\KDTree\CKDTree.py", line 4, in ? 
import _CKDTree 
ImportError: No module named _CKDTree 
>>> 

With best 
Arturas Z.