Cleanup

app.py

@@ -41,14 +41,14 @@ class RequestHandler(SimpleHTTPRequestHandler):
             warnings = []
 
             for k, v in dataset_keys.items():
-                if len(v.keys()) < len(dataset_with_most_splits):
+                if len(v) < len(dataset_with_most_splits):
                     warnings.extend(f"The {k} dataset does not contain all splits. Missing: {dataset_with_most_splits - v}")
 
             self.send_response(200)
             self.send_header("Content-Type", "application/json")
             self.end_headers()
 
-            self.wfile.write(json.dumps(dataset_keys).encode("utf-8"))
+            self.wfile.write(json.dumps(list(dataset_with_most_splits)).encode("utf-8"))
 
             return SimpleHTTPRequestHandler