_ElementInterface实例没有属性'tostring'

Question

下面的代码生成此错误.我无法弄清楚为什么.如果ElementTree有解析,为什么它没有tostring？http://docs.python.org/library/xml.etree.elementtree.html#xml.etree.ElementTree.ElementTree

from xml.etree.ElementTree import ElementTree

...

tree = ElementTree()
node = ElementTree()

node = tree.parse(open("my_xml.xml"))
text = node.tostring()

Answer 1

tostring是xml.etree.ElementTree模块的一种方法,而不是容易混淆的类似命名的xml.etree.ElementTree.ElementTree类.

from xml.etree.ElementTree import ElementTree
from xml.etree.ElementTree import tostring

tree = ElementTree()
node = tree.parse(open("my_xml.xml"))
text = tostring(node)