[Expat-discuss] expat and compressed xml

[Thomas Younger]

zcat

________________________________________
From: expat-discuss-bounces+tyounger=questertangent.com at libexpat.org [expat-discuss-bounces+tyounger=questertangent.com at libexpat.org] On Behalf Of gilbert F. [gilbertff at gmail.com]
Sent: Tuesday, January 12, 2010 2:37 PM
To: expat-discuss at libexpat.org
Subject: [Expat-discuss] expat and compressed xml

Hello,

Here is a quick question about parsing xml .gz file. Here is what I
did. With the following script

req = urllib2.Request(query_url)
xml_file = urllib2.urlopen(req).read()

I downloaded a compressed xml file.  The file has a suffix of ".gz".

Now I used

p = xml.parsers.expat.ParserCreate()
p.ParseFile(xml_file)

The last line gave

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: argument must have 'read' attribute

xml_file is not a file. It is a string therefore it gave an error.

Anybody knows how to uncompress the downloaded file? I know that
"gunzip" can be used to uncompress ".gz" files, however I do not know
how to get the uncompressed result.

Any help? Thanks so much.
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