This is the full data file on which my regress/Tribug exhibits the behaviour that I find incomprehensible, described in the first post in this thread. The comment in the beginning of the file below was written before I commented out some records in the data, so the actual numbers now are not ten expected, thirty sometimes observed, but the wrong number is always the correct number tripled (5 and 15, I think).
---regress/tridata.py follows--- # Exercise lxml.etree.parse(body).xpath(title) # which I think should always return a list of # ten elements but sometimes returns thirty, # with each of the ten in triplicate. And this # seems impossible to me. Yet I see it happening. body = b'''<OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd";> <responseDate>2010-03-02T09:38:47Z</responseDate> <request verb="ListRecords" from="2004-01-01T00:00:00Z" until="2004-12-31T23:59:59Z" metadataPrefix="oai_dc">http://localhost/pmh/que</request> <ListRecords> <record> <header><!-- x --><!-- --> <identifier>jrc32003R0055-pl.xml/2/0</identifier> <datestamp>2004-08-15T19:45:00Z</datestamp> <setSpec>pl</setSpec> </header> <metadata> <oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"; xmlns:dc="http://purl.org/dc/elements/1.1"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc http://www.openarchives.org/OAI/2.0/oai_dc.xsd";> <dc:title>Rozporządzenie</dc:title> </oai_dc:dc> </metadata> </record> <!-- <record> <header> <identifier>jrc32003R0055-pl.xml/2/1</identifier> <datestamp>2004-08-15T19:45:00Z</datestamp> <setSpec>pl</setSpec> </header> <metadata> <oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"; xmlns:dc="http://purl.org/dc/elements/1.1"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc http://www.openarchives.org/OAI/2.0/oai_dc.xsd";> <dc:title>Komisji</dc:title> </oai_dc:dc> </metadata> </record> <record> <header> <identifier>jrc32003R0055-pl.xml/2/2</identifier> <datestamp>2004-08-15T19:45:00Z</datestamp> <setSpec>pl</setSpec> </header> <metadata> <oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"; xmlns:dc="http://purl.org/dc/elements/1.1"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc http://www.openarchives.org/OAI/2.0/oai_dc.xsd";> <dc:title>(WE)</dc:title> </oai_dc:dc> </metadata> </record> <record> <header> <identifier>jrc32003R0055-pl.xml/2/3</identifier> <datestamp>2004-08-15T19:45:00Z</datestamp> <setSpec>pl</setSpec> </header> <metadata> <oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"; xmlns:dc="http://purl.org/dc/elements/1.1"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc http://www.openarchives.org/OAI/2.0/oai_dc.xsd";> <dc:title>nr</dc:title> </oai_dc:dc> </metadata> </record> <record> <header> <identifier>jrc32003R0055-pl.xml/2/4</identifier> <datestamp>2004-08-15T19:45:00Z</datestamp> <setSpec>pl</setSpec> </header> <metadata> <oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"; xmlns:dc="http://purl.org/dc/elements/1.1"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc http://www.openarchives.org/OAI/2.0/oai_dc.xsd";> <dc:title>55/2003</dc:title> </oai_dc:dc> </metadata> </record> <record> <header> <identifier>jrc32003R0055-pl.xml/3/0</identifier> <datestamp>2004-08-15T19:45:00Z</datestamp> <setSpec>pl</setSpec> </header> <metadata> <oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"; xmlns:dc="http://purl.org/dc/elements/1.1"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc http://www.openarchives.org/OAI/2.0/oai_dc.xsd";> <dc:title>z</dc:title> </oai_dc:dc> </metadata> </record> --> <record> <header> <identifier>jrc32003R0055-pl.xml/3/1</identifier> <datestamp>2004-08-15T19:45:00Z</datestamp> <setSpec>pl</setSpec> </header> <metadata> <oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"; xmlns:dc="http://purl.org/dc/elements/1.1"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc http://www.openarchives.org/OAI/2.0/oai_dc.xsd";> <dc:title>dnia</dc:title> </oai_dc:dc> </metadata> </record> <record> <header> <identifier>jrc32003R0055-pl.xml/3/2</identifier> <datestamp>2004-08-15T19:45:00Z</datestamp> <setSpec>pl</setSpec> </header> <metadata> <oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"; xmlns:dc="http://purl.org/dc/elements/1.1"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc http://www.openarchives.org/OAI/2.0/oai_dc.xsd";> <dc:title>13</dc:title> </oai_dc:dc> </metadata> </record> <record> <header> <identifier>jrc32003R0055-pl.xml/3/3</identifier> <datestamp>2004-08-15T19:45:00Z</datestamp> <setSpec>pl</setSpec> </header> <metadata> <oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"; xmlns:dc="http://purl.org/dc/elements/1.1"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc http://www.openarchives.org/OAI/2.0/oai_dc.xsd";> <dc:title>stycznia</dc:title> </oai_dc:dc> </metadata> </record> <record> <header> <identifier>jrc32003R0055-pl.xml/3/4</identifier> <datestamp>2004-08-15T19:45:00Z</datestamp> <setSpec>pl</setSpec> </header> <metadata> <oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"; xmlns:dc="http://purl.org/dc/elements/1.1"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc http://www.openarchives.org/OAI/2.0/oai_dc.xsd";> <dc:title>2003</dc:title> </oai_dc:dc> </metadata> </record> </ListRecords> </OAI-PMH> ''' title = '//*[name()="record"]//*[name()="dc:title"]' -- http://mail.python.org/mailman/listinfo/python-list
