Fixed code quality complaints

src/coscine/object.py

@@ -168,7 +168,7 @@ class FileActions:
         The URL is valid for 24 hours and requires no authentication.
         """
         if "Download" in self._data:
-            return self._data["Download"]["Url"] 
+            return self._data["Download"]["Url"]
         return ""
 
     @property

src/coscine/resource.py

@@ -722,12 +722,15 @@ class Resource:
                 for key, values in metadata.items():
                     for value in values:
                         valtype: str = value["type"]
-                        value: str = value["value"]
+                        valuestr: str = value["value"]
+                        if valtype == "uri":
+                            rdf_object = rdflib.URIRef(valuestr)
+                        else:
+                            rdflib.Literal(valuestr)
                         graph.add((
                             file_reference,
                             rdflib.URIRef(key),
-                            rdflib.URIRef(value) if valtype == "uri"
-                                else rdflib.Literal(value)
+                            rdf_object
                         ))
 
         #######################################################################