correct reference to XML file name parsed

django_diu/import_command.py

@@ -168,7 +168,7 @@ class XMLImportTask(ImportTask):
     xpathSelector = "*"
 
     def open_data_source(self):
-        tree = ET.parse(argv[1])
+        tree = ET.parse(self.xmlFile)
         root = tree.getroot()
         self.rows = root.findall(self.xpathSelector)