fix prompt bug

tools/conversation.py

@@ -47,7 +47,7 @@ def get_prompt(conv):
             else:
                 ret += conv.sep1
         else:
-            ret += role + ":"
+            ret += role + ": "
     return ret
 
 
@@ -104,6 +104,7 @@ class Chat:
             print(f"Prompt: {prompt}", flush=True)
 
         inputs = self.processor(prompt, images=images, edit_prompt=False, return_prompt=False)
+        # print(self.processor.tokenizer.convert_ids_to_tokens(inputs['input_ids'][0]))
         inputs = {k:v.to(self.device) for k,v in inputs.items() if v is not None}
         return inputs, conv, images