Fix file path argument acting as prefix

src/coscine/resource.py

@@ -817,7 +817,12 @@ class Resource:
             for item in self.client.get(uri, params={"Path": path}).data
         ]
         if len(files) > 1:
-            raise TooManyResults
+            # path argument acts as prefix, may yield more than 1 result
+            # Only return exact matches!
+            for f in files:
+                if f.path == path:
+                    return f
+            raise NotFoundError
         if len(files) == 0:
             raise NotFoundError
         return files[0]