PythonでXMLを操作する

みんなのPython でXMLを操作するサンプルがあったので実行してみました。
Ubuntuでは、ElementTreeもパッケージ化されているんですね。
下記で必要なパッケージが使えるようになります。

$ sudo aptitude install python-elementt

Pythonのパッケージの考え方を理解していなったので、本のサンプルの通りに実行できずにしばらく悩みました。
サンプルは、http://python.org/からリンクされているURLを一覧するプログラムのです。

$ python
Python 2.4.4c1 (#2, Oct 11 2006, 21:51:02)
[GCC 4.1.2 20060928 (prerelease) (Ubuntu 4.1.1-13ubuntu5)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from urllib import urlopen
>>> e = ElementTree(file=urlopen("http://python.org"))
Traceback (most recent call last):
File "<stdin>", line 1, in ?
NameError: name 'ElementTree' is not defined
>>>

ElementTreeをインポートしたら問題なく動きました。

$ python
Python 2.4.4c1 (#2, Oct 11 2006, 21:51:02)
[GCC 4.1.2 20060928 (prerelease) (Ubuntu 4.1.1-13ubuntu5)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from urllib import urlopen
>>> from elementtree.ElementTree import *
>>> e = ElementTree(file=urlopen("http://python.org"))
>>> for elem in e.getiterator():
...     if elem.tag.endswith("}a"):
...             print elem.get("href", "NONE")
...
.
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