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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def validate(self, xml_input):
 """ This method validate the parsing and schema, return a boolean """

        parsed_xml = etree.parse(self._handle_xml(xml_input))
        try:
            return self.xmlschema.validate(parsed_xml)
        except AttributeError:
            raise CannotValidate('Set XSD to validate the XML')