remove repeated call

app.py

@@ -16,6 +16,7 @@ tokenizer = get_tokenizer('spacy', language='en_core_web_sm')
 vocab = torch.load(hf_hub_download(repo_id="nickgardner/chatbot",
                                    filename="vocab.pth"))
 vocab_token_dict = vocab.get_stoi()
+indices_to_tokens = vocab.get_itos()
 pad_token = vocab_token_dict['<pad>']
 unknown_token = vocab_token_dict['<unk>']
 sos_token = vocab_token_dict['<sos>']
@@ -51,7 +52,7 @@ def respond(custom_string):
         outputs[i] = ix[0][0]
         if ix[0][0] == vocab_token_dict['<eos>']:
             break
-    return ' '.join([vocab.get_itos()[ix] for ix in outputs[1:i]])
+    return ' '.join([indices_to_tokens[ix] for ix in outputs[1:i]])
 
 iface = gr.Interface(fn=respond, inputs="text", outputs="text")
 iface.launch()