[英]Using python lxml.etree for huge XML files
我想在Python中使用lxml.etree
解析一个巨大的xml(> 200MB)。 我尝试使用etree.parse
加载XML文件,但由于文件大小,这不起作用:
etree.parse('file.xml')Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "lxml.etree.pyx", line 2706, in lxml.etree.parse (src/lxml/lxml.etree.c:49958)
File "parser.pxi", line 1500, in lxml.etree._parseDocument (src/lxml/lxml.etree.c:71797)
File "parser.pxi", line 1529, in lxml.etree._parseDocumentFromURL (src/lxml/lxml.etree.c:72080)
File "parser.pxi", line 1429, in lxml.etree._parseDocFromFile (src/lxml/lxml.etree.c:71175)
File "parser.pxi", line 975, in lxml.etree._BaseParser._parseDocFromFile (src/lxml/lxml.etree.c:68173)
File "parser.pxi", line 539, in lxml.etree._ParserContext._handleParseResultDoc (src/lxml/lxml.etree.c:64257)
File "parser.pxi", line 625, in lxml.etree._handleParseResult (src/lxml/lxml.etree.c:65178)
File "parser.pxi", line 565, in lxml.etree._raiseParseError (src/lxml/lxml.etree.c:64521)
lxml.etree.XMLSyntaxError: Excessive depth in document: 256 use XML_PARSE_HUGE option, line 1276, column 7
因为我想使用xpath表达式,我必须先解析文件。 我如何解析XML文件? 如何使用XML_PARSE_HUGE
在连接lxml.etree
?
谢谢!
尝试创建自定义XMLParser
实例:
from lxml.etree import XMLParser, parse
p = XMLParser(huge_tree=True)
tree = parse('file.xml', parser=p)
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