Update app.py

app.py

@@ -5,10 +5,15 @@ from transformers import GPT2LMHeadModel, GPT2Tokenizer
 import requests
 import json
 
+# Global initialization
+tokenizer = GPT2Tokenizer.from_pretrained('gpt2')
+model = GPT2LMHeadModel.from_pretrained('gpt2')
+
 class SecondLifeNavigator:
-    def __init__(self, model_name='gpt2', corrade_api_key='nucleus'):
-        self.tokenizer = GPT2Tokenizer.from_pretrained(model_name)
-        self.model = GPT2LMHeadModel.from_pretrained(model_name)
+    def __init__(self, corrade_api_key='nucleus'):
+        global tokenizer, model
+        self.tokenizer = tokenizer
+        self.model = model
         self.corrade_api_key = corrade_api_key
 
     def send_command_to_corrade(self, corrade_endpoint, command, parameters):