Fix bug with relatedItem types + no copyright

MODS_Scripts/process_xml.py

@@ -139,6 +139,8 @@ def get_name_value(name=ET.Element):
 def get_copyright_data(accessCondition=ET.Element):
     copyright = accessCondition.find(
         'copyrightMD:copyright', namespaces['copyright_ns'])
+    if copyright is None:
+        return []
     data = [('publication_status', copyright.attrib.get('publication.status')),
             ('copyright_status', copyright.attrib.get('copyright.status'))]
     return [(key, value) for key, value in data if value]
@@ -211,7 +213,6 @@ def get_name_data(name=ET.Element):
     return data
 
 
-
 # Add type attribute value for name element to XPath
 def add_name_type(element=ET.Element, xpath=str):
     name = element.getparent()
@@ -293,7 +294,7 @@ def process_xml(file):
             if tag in ['namePart', 'roleTerm']:
                 field = add_name_type(element, xpath)
             if 'relatedItem/' in field:
-                field = add_relatedItem_type(element, xpath)
+                field = add_relatedItem_type(element, field)
             # Update xpath to corresponding column name, if one exists
             field = columns[field] if field in columns else field
             # Add data to record