[跪求大牛] 这个错误如何解？No module named elementtree.ElementTree

[wangnijie8634]

我们这边有段python，但是我对python一窍不通, 我发现错误是因为：
<type 'exceptions.ImportError'> : No module named elementtree.ElementTree

所以我在想，是不是因为没有安装elementtree这个模块
$ python
'import site' failed; use -v for traceback
Python 2.5.4 (r254:67916, May 14 2009, 10:42:44)
[GCC 4.1.0 (SUSE Linux)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import elementtree.ElementTree
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named elementtree.ElementTree

所以我就安装了这个模块

$ gzip -d elementtree-1.2.6-20050316.tar.gz && tar xvf elementtree-1.2.6-20050316.tar
$ cd elementtree-1.2.6-20050316
$ export PATH=/scratch/apple/python-2.5.4/bin:$PATH
$ export LD_LIBRARY_PATH=/scratch/apple/python-2.5.4/lib:$LD_LIBRARY_PATH
$ python setup.py install

从输出信息来看，是安装成功的


$ ls /scratch/apple/python-2.5.4/lib/python2.5/site-packages
elementtree elementtree-1.2.6_20050316-py2.5.egg-info README


但是还是import失败，而且我那程序也还是那个错误:

$ python
'import site' failed; use -v for traceback
Python 2.5.4 (r254:67916, May 14 2009, 10:42:44)
[GCC 4.1.0 (SUSE Linux)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import elementtree.ElementTree
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named elementtree.ElementTree

[ch19860304]

http://www.velocityreviews.com/forums/t321378-re-import-error.html

查看环境变量PATH跟LD_LIBRARY_PATH的值，python不一致，乱了

[wangnijie8634]

有人知道是这怎么回事吗？

[angel_su]

养成查看手册的习惯：
Python Library Reference: 8.13 xml.etree.ElementTree

装第三方模块也也行，一样先查查包里有没有文档，起码readme，install看一下

[wangnijie8634]

$ cat README
This directory exists so that 3rd party packages can be installed
here. Read the source for site.py for more details.

$ pwd
/scratch/apple/python-2.5.4/lib/python2.5/site-packages

没发现有site.py啊

[wangnijie8634]

我试了

>>> import xml.etree.ElementTree
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named xml.etree.ElementTree

也不行

[wangnijie8634]

我发现问题在哪了？但我不知道问题的根源在哪？
我的case好像把环境搞乱了，搞得每次运行python时，都会出一个错误提示"'import site' failed; use -v for traceback"

我如果重开一个窗口，就没有这问题了


大家知道，这是为什么吗？