Update app.py

app.py

@@ -1,8 +1,8 @@
 import gradio as gr
 import openai 
+import os
 
-openai.api_key = "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" # insert your own OpenAI key
-
+openai.api_key = os.environ.get('openai_api_key')
 def chatbot(input):
     
     prompt = """You only answer questions about Chronic Kidney Disease (CKD). If the question is not about CKD, you politely respond that you are not designed to answer that kind of question.\n\n""" + input