from lxml import etree
root = etree.Element('root1')
element = etree.SubElement(root, 'element1')
root.write( 'xmltree.xml' )
错误：
AttributeError: 'lxml.etree._Element' object has no attribute 'write'
我怎样才能解决这个问题？
问问题
23512 次
2 回答
11
Elements(like root) 没有write方法，但ElementTrees有：
from lxml import etree
root = etree.Element('root1')
element = etree.SubElement(root, 'element1')
tree = root.getroottree()
print(type(tree))
# <type 'lxml.etree._ElementTree'>
tree.write('xmltree.xml')
网上的文档tree.write有点难找。这是该方法的文档字符串：
In [7]: tree.write?
Type: builtin_function_or_method
Base Class: <type 'builtin_function_or_method'>
String Form: <built-in method write of lxml.etree._ElementTree object at 0x95c48cc>
Namespace: Interactive
Docstring:
write(self, file, encoding=None, method="xml",
pretty_print=False, xml_declaration=None, with_tail=True,
standalone=None, compression=0,
exclusive=False, with_comments=True)
Write the tree to a filename, file or file-like object.
Defaults to ASCII encoding and writing a declaration as needed.
The keyword argument 'method' selects the output method:
'xml', 'html', 'text' or 'c14n'. Default is 'xml'.
The ``exclusive`` and ``with_comments`` arguments are only
used with C14N output, where they request exclusive and
uncommented C14N serialisation respectively.
Passing a boolean value to the ``standalone`` option will
output an XML declaration with the corresponding
``standalone`` flag.
The ``compression`` option enables GZip compression level 1-9.
于 2013-03-26T10:49:06.500 回答
7
如果您想将新的 xml 保存到文件中，那么etree.tostring就是要使用的方法。
例如
>>> from lxml import etree
>>> root = etree.Element('root1')
>>> element = etree.SubElement(root, 'element1')
>>> print etree.tostring(root,pretty_print=True) ## Print document
<root1>
<element1/>
</root1>
>>> with open('xmltree.xml','w') as f: ## Write document to file
... f.write(etree.tostring(root,pretty_print=True))
...
>>>
于 2013-03-26T10:37:27.140 回答