python - Regex include line breaks

I have the following xml file

A



B
C




D


Picture number 3?

and I just want to get the text between

and

.
So I've tried this code :

import os, re

html = open("2.xml", "r")
text = html.read()
lon = re.compile(r'
\n(.+)\n
', re.MULTILINE)
lon = lon.search(text).group(1)
print lon

but It doesn't seem to work.