Update app.py

app.py

@@ -8,6 +8,8 @@ model1.load_state_dict(torch.load("gpt_model.pth", map_location=torch.device('cp
 device = 'cuda' if torch.cuda.is_available() else 'cpu'
 model1 = model1.to(device)
 # Character mappings from the training script
+with open('input.txt', 'r', encoding='utf-8') as f:
+    text = f.read()
 chars = sorted(list(set(text)))
 vocab_size = len(chars)
 stoi = { ch:i for i,ch in enumerate(chars) }