How do I validate xml against a DTD file in Python

Question

I need to validate an XML string (and not a file) against a DTD description file.

How can that be done in python?

Answer 1

from the examples directory in the libxml2 python bindings:

#!/usr/bin/python -u
import libxml2
import sys

# Memory debug specific
libxml2.debugMemory(1)

dtd=""""""
instance="""
"""

dtd = libxml2.parseDTD(None, 'test.dtd')
ctxt = libxml2.newValidCtxt()
doc = libxml2.parseDoc(instance)
ret = doc.validateDtd(ctxt, dtd)
if ret != 1:
    print "error doing DTD validation"
    sys.exit(1)

doc.freeDoc()
dtd.freeDtd()
del dtd
del ctxt