更新

app.py

@@ -20,8 +20,14 @@ def main():
 
     def my_inference_function(enabled, api_key, api_base, url):
         if enabled:
-            os.environ["OPENAI_API_KEY"] = api_key
-            os.environ['OPENAI_API_BASE'] = api_base
+            if api_key:
+                os.environ["OPENAI_API_KEY"] = api_key
+            else:
+                os.environ.pop("OPENAI_API_KEY", None)
+            if api_base:
+                os.environ['OPENAI_API_BASE'] = api_base
+            else:
+                os.environ.pop('OPENAI_API_BASE', None)
             llm = OpenAI(temperature=0.7, model_name="gpt-3.5-turbo", max_tokens=1024)
         else:
             llm = HuggingFaceHub(repo_id="declare-lab/flan-alpaca-large", model_kwargs={"temperature":0.1, "max_length":512})