How to capture multiple syntax errors (well-formedness) in XML using Python? [duplicate]

I want to check for multiple syntax errors in an XML file. For example, missing < or slashes. And not just print the first one like xml.sax or XMLParser do, but show all different errors.

My current function, I try both sax and etree parser:

def check_xml_syntax(xml_file):
    is_valid = True
    try:
        # Parse the XML file
        parser_f = make_parser(  )
        parser_f.setContentHandler(ContentHandler(  ))
        parser_f.parse(xml_file)
        parser = etree.XMLParser(dtd_validation=False)
        etree.parse(xml_file, parser)
        print(f"fctModelFiletoTcl.py: Validation successful: {xml_file} is a valid XML file.")
    except etree.XMLSyntaxError as e:
        is_valid = False
        print(f"fctModelFiletoTcl.py: XML Syntax Error in {xml_file}: {e}")
    except etree.XMLSchemaError as e:
        is_valid = False
        print(f"fctModelFiletoTcl.py: XML Schema Error in {xml_file}: {e}")
    return is_valid