当我运行eclipse或在iPython中运行脚本时,它失败了:
'ascii' codec can't decode byte 0xe2 in position 32: ordinal not in range(128)
我不知道为什么,但是当我只使用相同的url执行feedparse.parse(url)语句时,不会抛出任何错误。这让我很难过。
代码简单如下:
try:
d = feedparser.parse(url)
except Exception, e:
logging.error('Error while retrieving feed.')
logging.error(e)
logging.error(formatExceptionInfo(None))
logging.error(formatExceptionInfo1())
这是堆栈跟踪:
d = feedparser.parse(url)
File "C:\Python26\lib\site-packages\feedparser.py", line 2623, in parse
feedparser.feed(data)
File "C:\Python26\lib\site-packages\feedparser.py", line 1441, in feed
sgmllib.SGMLParser.feed(self, data)
File "C:\Python26\lib\sgmllib.py", line 104, in feed
self.goahead(0)
File "C:\Python26\lib\sgmllib.py", line 143, in goahead
k = self.parse_endtag(i)
File "C:\Python26\lib\sgmllib.py", line 320, in parse_endtag
self.finish_endtag(tag)
File "C:\Python26\lib\sgmllib.py", line 360, in finish_endtag
self.unknown_endtag(tag)
File "C:\Python26\lib\site-packages\feedparser.py", line 476, in unknown_endtag
method()
File "C:\Python26\lib\site-packages\feedparser.py", line 1318, in _end_content
value = self.popContent('content')
File "C:\Python26\lib\site-packages\feedparser.py", line 700, in popContent
value = self.pop(tag)
File "C:\Python26\lib\site-packages\feedparser.py", line 641, in pop
output = _resolveRelativeURIs(output, self.baseuri, self.encoding)
File "C:\Python26\lib\site-packages\feedparser.py", line 1594, in _resolveRelativeURIs
p.feed(htmlSource)
File "C:\Python26\lib\site-packages\feedparser.py", line 1441, in feed
sgmllib.SGMLParser.feed(self, data)
File "C:\Python26\lib\sgmllib.py", line 104, in feed
self.goahead(0)
File "C:\Python26\lib\sgmllib.py", line 138, in goahead
k = self.parse_starttag(i)
File "C:\Python26\lib\sgmllib.py", line 296, in parse_starttag
self.finish_starttag(tag, attrs)
File "C:\Python26\lib\sgmllib.py", line 338, in finish_starttag
self.unknown_starttag(tag, attrs)
File "C:\Python26\lib\site-packages\feedparser.py", line 1588, in unknown_starttag
attrs = [(key, ((tag, key) in self.relative_uris) and self.resolveURI(value) or value) for key, value in attrs]
File "C:\Python26\lib\site-packages\feedparser.py", line 1584, in resolveURI
return _urljoin(self.baseuri, uri)
File "C:\Python26\lib\site-packages\feedparser.py", line 286, in _urljoin
return urlparse.urljoin(base, uri)
File "C:\Python26\lib\urlparse.py", line 215, in urljoin
params, query, fragment))
File "C:\Python26\lib\urlparse.py", line 184, in urlunparse
return urlunsplit((scheme, netloc, url, query, fragment))
File "C:\Python26\lib\urlparse.py", line 192, in urlunsplit
url = scheme + ':' + url
File "C:\Python26\lib\encodings\cp1252.py", line 15, in decode
return codecs.charmap_decode(input,errors,decoding_table)
部分解决:
当传递给feedparser.parse()的URL是unicode时,这是可重现的。当它是ascii URL时它不会重现。为了记录,您需要一个具有一些高字符unicode字符的feed。我不知道为什么会这样。
答案 0 :(得分:1)
看起来给你问题的网址包含带有某些编码的文字(例如latin-1,其中0xe2
将是“小写a,顶部有一个圆圈”,而不是â
)正确的内容类型标题(它应该在Content-Type:
中有一个charset =参数但不包含)。
如果是这种情况feedparser
无法猜测编码,请尝试默认值(ascii
),然后失败。
不幸的是,没有“神奇的子弹”来解决这个一般问题(由于bozos打破了XML规则)。您可以尝试捕获此异常,并在处理程序中单独读取url的内容(使用urllib2
)并尝试使用各种可能的编码对它们进行解码 - 然后当您最终以这种方式获得可用的unicode对象时,请输入 到feedparser.parse
(其第一个arg可以是url,文件流,或带有数据的unicode字符串)。
答案 1 :(得分:1)
参考OP的评论:尝试任何url文字,例如u'myfeed.blah / xml'它应该重现。
>>> from pprint import pprint as pp
>>> import feedparser
>>> d = feedparser.parse(u'myfeed.blah/xml')
>>> pp(d)
{'bozo': 1,
'bozo_exception': SAXParseException('not well-formed (invalid token)',),
'encoding': 'utf-8',
'entries': [],
'feed': {},
'namespaces': {},
'version': ''}
>>> d = feedparser.parse(u'http://myfeed.blah/xml')
>>> pp(d)
{'bozo': 1,
'bozo_exception': URLError(gaierror(11001, 'getaddrinfo failed'),),
'encoding': 'utf-8',
'entries': [],
'feed': {},
'version': None}
>>> d = feedparser.parse("http://feedparser.org/docs/examples/atom10.xml")
>>> d['bozo']
0
>>> d['feed']['title']
u'Sample Feed'
>>> d = feedparser.parse(u"http://feedparser.org/docs/examples/atom10.xml")
>>> d['bozo']
0
>>> d['feed']['title']
u'Sample Feed'
>>>
请停止捶打;提供实际导致问题的URL。