Update chat_func.py

chat_func.py

@@ -264,6 +264,7 @@ def predict(
     files = None,
     should_check_token_count=True,
 ):  # repetition_penalty, top_k
+    openai_api_key = openai_api_key or os.environ.get("OPENAI_API_KEY", "")
     logging.info("输入为：" + colorama.Fore.BLUE + f"{inputs}" + colorama.Style.RESET_ALL)
     if files:
         msg = "构建索引中……（这可能需要比较久的时间）"