openai key

app.py

@@ -30,6 +30,7 @@ Your answers should be:
 Helpful Answer:"""
 
 QA_CHAIN_PROMPT = PromptTemplate(input_variables=["context", "question"], template=template,)
+
 OPENAI_API_KEY = ''
 
 def get_opeanai_key(openai_key):
@@ -40,6 +41,9 @@ def get_opeanai_key(openai_key):
 
 
 def slow_echo(usr_message, chat_history):
+
+    if OPENAI_API_KEY=='':
+        return 'Invalid or empty OPENAI_API_KEY', chat_history
     
     chat_model = ChatOpenAI(temperature=0, model_name='gpt-3.5-turbo', openai_api_key=OPENAI_API_KEY)
     # customized memory