from lxml.includes cimport tree from lxml.includes.tree cimport xmlDoc, xmlDtd cdef extern from "libxml/valid.h" nogil: ctypedef struct xmlValidCtxt cdef xmlValidCtxt* xmlNewValidCtxt() cdef void xmlFreeValidCtxt(xmlValidCtxt* cur) cdef int xmlValidateDtd(xmlValidCtxt* ctxt, xmlDoc* doc, xmlDtd* dtd) cdef tree.xmlElement* xmlGetDtdElementDesc( xmlDtd* dtd, tree.const_xmlChar* name)