我一直在使用lxml和formalchemy为sqlalchemy构建一个脚手架库,我很难让他们玩得很好。具体来说,formalchemy.FieldSet.render()
返回一个没有root标签的html片段,我似乎无法弄清楚如何让lxml将其解析成可以包含在元素树中的东西:
我得到了什么:
>>> lxml.etree.fromstring(formalchemy.FieldSet(toyschema.User(), session).render())
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "lxml.etree.pyx", line 2743, in lxml.etree.fromstring (src/lxml/lxml.etree.c:52665)
File "parser.pxi", line 1573, in lxml.etree._parseMemoryDocument (src/lxml/lxml.etree.c:79932)
File "parser.pxi", line 1445, in lxml.etree._parseDoc (src/lxml/lxml.etree.c:78709)
File "parser.pxi", line 920, in lxml.etree._BaseParser._parseUnicodeDoc (src/lxml/lxml.etree.c:75083)
File "parser.pxi", line 564, in lxml.etree._ParserContext._handleParseResultDoc (src/lxml/lxml.etree.c:71739)
File "parser.pxi", line 645, in lxml.etree._handleParseResult (src/lxml/lxml.etree.c:72614)
File "parser.pxi", line 585, in lxml.etree._raiseParseError (src/lxml/lxml.etree.c:71955)
lxml.etree.XMLSyntaxError: Extra content at the end of the document, line 8, column 1
我想要的:
>>> ?????(formalchemy.FieldSet(toyschema.User(), session).render())
[<Element div at 0x1e48e10>, <Element script at 0x1e48cd0>, <Element div at 0x1e48730>, <Element div at 0x1ea1e60>]
我的原油解决方案:
>>> lxml.etree.fromstring('<root>%s</root>' % formalchemy.FieldSet(toyschema.User(), session).render()).getchildren()
[<Element div at 0x1e48e10>, <Element script at 0x1e48cd0>, <Element div at 0x1e48730>, <Element div at 0x1ea1e60>]
答案 0 :(得分:6)
要解析HTML,您要使用lxml.html
,而不是lxml.etree
。
如果你想要一个片段列表而不是将它们包裹在div
中,你可以使用here所述的fragments_fromstring(string)
。