I am currently using lxml and want to validate a XML content.
I wrote it completely in Python from tei = etree.Element("TEI", nsmap={None: 'http://www.tei-c.org/ns/1.0'} with many subelements.
At a moment, I want to check if the structure is ok using a specific .xsd file using the following code:
xmlschema_doc = etree.parse(xsd_file_path)xmlschema = etree.XMLSchema(xmlschema_doc)# run checkstatus = xmlschema.validate(xml_tree)It returns False with error Element 'TEI': No matching global declaration available for the validation root.
I observe a very weird thing that if I write the xml using
ET = etree.ElementTree(xmlData)ET.write('test.xml', pretty_print=True, xml_declaration=True, encoding='utf-8')and if I reopen it with b= etree.parse('test.xml') I finally had no error and the xml structure is valid as a result of xmlschema.validate(b)
Any idea about what I need to add in my xml structure?
EDIT:First items in the not valid XML 
First items in the valid XML file 
EDIT:
<?xml version='1.0' encoding='UTF-8'?><TEI xmlns="http://www.tei-c.org/ns/1.0"><text><body><listBibl><biblFull><titleStmt><title xml:lang="en">article</title><title xml:lang="fr">article</title><title type="sub" xml:lang="en">A subtitle</title><author role="aut"><persName><forename type="first">John</forename><surname>Doe</surname></persName><email>email</email><idno type="http://orcid.org/">orcid</idno><affiliation ref="#localStruct-affiliation"/><affiliation ref="#struct-affiliation"/></author><author role="aut"><persName><forename type="first">Jane</forename><forename type="middle">Middle</forename><surname>Doe</surname></persName><email>email</email><idno type="http://orcid.org/">orcid</idno><affiliation ref="#localStruct-affiliationA"/><affiliation ref="#localStruct-affiliationB"/></author></titleStmt><editionStmt><edition><ref type="file" subtype="author" n="1" target="upload.pdf"/></edition></editionStmt><publicationStmt><availability><licence target="https://creativecommons.org/licenses//cc-by/"/></availability></publicationStmt><notesStmt><note type="audience" n="2"/><note type="invited" n="1"/><note type="popular" n="0"/><note type="peer" n="1"/><note type="proceedings" n="0"/><note type="commentary">small comment</note><note type="description">small description</note></notesStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">article</title><title xml:lang="fr">article</title><title type="sub" xml:lang="en">A subtitle</title><author role="aut"><persName><forename type="first">John</forename><surname>Doe</surname></persName><email>email</email><idno type="http://orcid.org/">orcid</idno><affiliation ref="#localStruct-affiliation"/><affiliation ref="#struct-affiliation"/></author><author role="aut"><persName><forename type="first">Jane</forename><forename type="middle">Middle</forename><surname>Doe</surname></persName><email>email</email><idno type="http://orcid.org/">orcid</idno><affiliation ref="#localStruct-affiliationA"/><affiliation ref="#localStruct-affiliationB"/></author></analytic><monogr><idno type="isbn">978-1725183483</idno><idno type="halJournalId">117751</idno><idno type="issn">xxx</idno><imprint><publisher>springer</publisher><biblScope unit="serie">a special collection</biblScope><biblScope unit="volume">20</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="pp">10-25</biblScope><date type="datePub">2024-01-01</date></imprint></monogr><series/><idno type="doi">reg</idno><idno type="arxiv">ger</idno><idno type="bibcode">erg</idno><idno type="ird">greger</idno><idno type="pubmed">greger</idno><idno type="ads">gaergezg</idno><idno type="pubmedcentral">gegzefdv</idno><idno type="irstea">vvxc</idno><idno type="sciencespo">gderg</idno><idno type="oatao">gev</idno><idno type="ensam">xcvcxv</idno><idno type="prodinra">vxcv</idno><ref type="publisher">https://publisher.com/ID</ref><ref type="seeAlso">https://link1.com/ID</ref><ref type="seeAlso">https://link2.com/ID</ref><ref type="seeAlso">https://link3.com/ID</ref></biblStruct></sourceDesc><profileDesc><textClass><keywords scheme="author"><term xml:lang="en">keyword1</term><term xml:lang="en">keyword2</term><term xml:lang="fr">mot-clé1</term><term xml:lang="fr">mot-clé2</term></keywords><classCode scheme="halDomain" n="physics"/><classCode scheme="halDomain" n="halDomain2"/><classCode scheme="halTypology" n="ART"/></textClass></profileDesc></biblFull></listBibl></body><back><listOrg type="structures"><org type="institution" xml:id="localStruct-affiliation"><orgName>laboratory for MC, university of Yeah</orgName><orgName type="acronym">LMC</orgName><desc><address><addrLine>Blue street 155, 552501 Olso, Norway</addrLine><country key="LS">Lesotho</country></address><ref type="url" target="https://lmc.univ-yeah.com"/></desc></org><org type="institution" xml:id="localStruct-affiliationB"><orgName>laboratory for MCL, university of Yeah</orgName><orgName type="acronym">LMCL</orgName><desc><address><addrLine>Blue street 155, 552501 Olso, Norway</addrLine><country key="NO">Norway</country></address><ref type="url" target="https://lmcl.univ-yeah.com"/></desc></org></listOrg></back></text></TEI>