你可以试试 findall('channel/item')
import urllib2
from xml.etree import ElementTree as etree
#reddit parse
reddit_file = urllib2.urlopen('http://www.reddit.com/r/videos/top/.RSS')
#convert to string:
reddit_data = reddit_file.read()
print reddit_data
#close file because we dont need it anymore:
reddit_file.close()
#entire Feed
reddit_root = etree.fromstring(reddit_data)
item = reddit_root.findall('channel/item')
print item
reddit_Feed=[]
for entry in item:
#get description, url, and thumbnail
desc = entry.findtext('description')
reddit_Feed.append([desc])
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