Is it possible to validate an XML file against XSD 1.1 in Python?

I want validate an XML file against an XSD file using lxml.XMLSchema. But the problem is the XSD is in 1.1. So it doesn’t work.

This is a part of the XML:

<?xml version="1.0" encoding="UTF-8"?>
<dictionary 
            xsi_noNamespaceSchemaLocation="!!assert.xsd">
  <SizeType>10</SizeType>
</dictionary>

And this is its XSD file:

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema 
           elementFormDefault="qualified">
  <xs:element name="SizeType">
    <xs:simpleType>
      <xs:restriction base="xs:integer">
        <xs:assertion test="$value = 10"/>
      </xs:restriction>
    </xs:simpleType>
  </xs:element>
</xs:schema>

So, is it possible to validate an XML file against a XSD file that uses xs:assertion statements (1.1)?

I think this question is closely related to this: lxml with schema 1.1