Added returned type to python backend and frontend

Backend-libXML/Parser.py

@@ -54,12 +54,12 @@ def xpath(source: str, xpath: str) -> str:
     # root.xpath can return 4 types: float, string, bool and list.
     # List is the only one that can't be simply converted to str
     if type(result) is not list:
-        return str(result)
+        return str(result), type(result).__name__
     else:
         result_string = ""
         for e in result:
             result_string += etree.tostring(e, pretty_print=True).decode() + "\n"
-        return result_string
+        return result_string, "list"