Update app.py

app.py

@@ -78,7 +78,7 @@ def keygen(eval_key, user_id):
 
     print("Initializing FHEModelClient...")
     # Let's create a user_id
-    user_id = numpy.random.randint(0, 2**32)
+    global user_id = numpy.random.randint(0, 2**32)
     fhe_api = FHEModelClient(f"fhe_model", f".fhe_keys/{user_id}")
     fhe_api.load()
 
@@ -91,7 +91,6 @@ def keygen(eval_key, user_id):
     eval_key = [list(evaluation_key)[:ENCRYPTED_DATA_BROWSER_LIMIT], user_id]
     return eval_key[0]
 
-
 def encode_quantize(test_file, eval_key, encodings):
     ugly = ['Machine', 'SizeOfOptionalHeader', 'Characteristics',
        'MajorLinkerVersion', 'MinorLinkerVersion', 'SizeOfCode',