Merge pull request #55 from plasma-umass/bugfix

fix to tool_call crash

src/chatdbg/assistant/assistant.py

@@ -271,6 +271,9 @@ def _streamed_query(self, prompt: str, user_text):
             # has only tool calls, and skip this step
             response_message = completion.choices[0].message
             if response_message.content != None:
+                # fix: remove tool calls.  They get added below.
+                response_message = response_message.copy()
+                response_message["tool_calls"] = None                
                 self._conversation.append(response_message.json())
 
             if response_message.content != None: