Improvement for original XmlItemExporter of scrapy to enable saving of dicts to xml (so free-form data can be saved to XML too).

exporters.py

from scrapy.contrib.exporter import XmlItemExporter

class DictXmlItemExporter(XmlItemExporter):

    def _export_xml_field(self, name, serialized_value):
        self.xg.startElement(name, {})
        if hasattr(serialized_value, '__iter__'):
          if isinstance(serialized_value, dict):
	            for key in serialized_value:
	                self._export_xml_field(key, serialized_value[key])
        	else:
	            for value in serialized_value:
	                self._export_xml_field('value', value)
        else:
            self.xg.characters(serialized_value)
        self.xg.endElement(name)