Python 3.1.2 + 雪豹 + lxml + XMLSchema

Question

我想在Python 3.1.2中使用lxml库来验证XML模式。

因为Snow Leopard MAC OS自带Python 2.6.1，所以我首先下载了Python 3.1.2的自动安装程序，地址是http://www.python.org/ftp/python/3.1.2/python-3.1.2-macosx10.3-2010-03-24.dmg，然后安装了它。

接着，我下载了lxml 2.2.6，地址是http://pypi.python.org/packages/source/l/lxml/lxml-2.2.6.tar.gz，解压后按照http://wiki.python.org/moin/CheeseShopTutorial上的说明进行了安装（也就是：）

  $ cd lxml-2.2.6
  $ python setup.py install

这个包在我的Python 2.6的安装目录（/Library/Python/2.6/site-packages）里安装得很顺利，但我希望它能安装在我的Python 3.1的目录（/Library/Frameworks/Python.framework/Versions/3.1/lib/python3.1/site-packages）里。

我尝试把python setup.py install替换成python3 setup.py install，但是控制台里出现了很多错误信息。用easy_install lxml安装lxml也出现了同样的问题。

最后，我试着直接把Python 2.6的安装目录里的内容移动到Python 3.1的安装目录，然后运行了一个测试脚本，像这样：

try:
    from lxml import etree
    print("running with lxml.etree")
except ImportError:
    try:
        # Python 2.5
        import xml.etree.cElementTree as etree
        print("running with cElementTree on Python 2.5+")
    except ImportError:
        try:
            # Python 2.5
            import xml.etree.ElementTree as etree
            print("running with ElementTree on Python 2.5+")
        except ImportError:
            try:
                # normal cElementTree install
                import cElementTree as etree
                print("running with cElementTree")
            except ImportError:
                try:
                    # normal ElementTree install
                    import elementtree.ElementTree as etree
                    print("running with ElementTree")
                except ImportError:
                    print("Failed to import ElementTree from any known place")


schema_root = etree.parse('note.xsd').getroot()
schema = etree.XMLSchema(schema_root)
parser = etree.XMLParser(schema = schema)
root = etree.parse('note.xml', parser)

结果在控制台里出现了这个错误信息：

Traceback (most recent call last):
  File "/Users/eduardo/Workspace/PythonToolbox/TestProject/src/testproject/domparse.py", line 97, in <module>
    schema = etree.XMLSchema(schema_root)
AttributeError: 'module' object has no attribute 'XMLSchema'
running with cElementTree on Python 2.5+

根据Ned Deily的建议，我做了以下操作：

$ curl http://pypi.python.org/packages/source/l/lxml/lxml-2.2.6.tar.gz | tar xz 
$ cd lxml-2.2.6
$ python3 setup.py install

但是我收到了几个编译错误信息，文件在http://www.educoelho.com/files/output.txt

我该如何让lxml在Python 3.1中运行呢？

提前谢谢你。

error handling version compatibility lxml Mac OS package installation xmlschema snow leopard xml validation

Python 3.1.2 + 雪豹 + lxml + XMLSchema

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