解析一个elementTree以返回XML形式的字符串- Python

Question

是否有一种方法从文件中解析整个ElementTree并将其作为python中的字符串返回?我想将整个文件读取为单个字符串值，例如抓取转储(树)的整个输出?任何帮助或建议将非常感激!

xml

import xml.etree.ElementTree as ET
print "Enter a filename"
filename = input()
tree = ET.parse(filename)
string = tree.tostring() ##is there a way to do something like this?

test.xml

<data>
     <serial>
     <serial name = "serial">SN001</serial>
     </serial>
     <items>
    <item>Test1 = Failed</item>
    <item>Test2 = Passed</item>
    <item>Test3 = Passed</item>
      </items>
</data>

Answer 1

tostring是一个模块函数，不是一个方法。

string = ET.tostring(tree.getroot())