在变量中读取XML文件（带缩进）（使用Python）

Question

有没有办法逐行读取XML文件，缩进Python变量？

我尝试了以下内容：

from lxml import etree as ET
tree = ET.parse("f1.xml")

和

from lxml import etree as ET
tree = ET.parse("f1.xml")
t1 = ET.fromstring(tree)

在做＃2时，我收到以下错误：

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "lxml.etree.pyx", line 3032, in lxml.etree.fromstring (src/lxml/lxml.etree.c:68121)
  File "parser.pxi", line 1785, in lxml.etree._parseMemoryDocument (src/lxml/lxml.etree.c:102459)
ValueError: can only parse strings"

如果我使用fopen函数来读取XML文件，则会添加一大堆垃圾 - 因为它似乎使用Microsoft Word或Open Office来读取文件..

Answer 1

import lxml.etree as etree 
x = etree.parse("filename") 
print etree.tostring(x, pretty_print = True)

这对我有用！