use of abstract class in validation schema

[bfranco]

here is a bug, i think....

Or is it possible to give me a solution:

xsd file is attached.

simple lxml code ==========================================

from lxml import etree
xmlout = etree.Element("animals")
tmp = etree.SubElement(xmlout, "animal")
tmp.set("xsi:type","sheepType")

# --- validation
xsdinfile = "database.xsd"
xmloutfile= "test.xml"
print " -","input xsd file:",xsdinfile
print " -","output xml file:",xmloutfile

schema = etree.XMLSchema(etree.parse(xsdinfile))
valid = schema.validate(xmlout)
schema.assertValid(xmlout)
print " -","validation:",valid

with open(xmloutfile, 'w') as output_file:
    output_file.write(etree.tostring(xmlout, pretty_print = True))

========================================================

output error ==================================================
python lmxl_test.py
Traceback (most recent call last):
  File "lmxl_test.py", line 4, in <module>
    tmp.set("xsi:type","sheepType")
  File "lxml.etree.pyx", line 744, in lxml.etree._Element.set (src/lxml/lxml.etree.c:44335)
  File "apihelpers.pxi", line 549, in lxml.etree._setAttributeValue (src/lxml/lxml.etree.c:19484)
  File "apihelpers.pxi", line 1583, in lxml.etree._attributeValidOrRaise (src/lxml/lxml.etree.c:29377)
ValueError: Invalid attribute name u'xsi:type'
========== ==================================================

please could you send me a solution ?

[scoder (scoder)]

Note that the error occurs *before* the validation. See
http://lxml.de/tutorial.html#namespaces