Update app.py

app.py

@@ -7,7 +7,8 @@ from sklearn.metrics.pairwise import cosine_similarity
 from sentence_transformers import SentenceTransformer
 from agents import Agent, Runner, function_tool
 
-os.environ['OPENAI_API_KEY'] = API_Key
+api_key = os.environ['API_Key']
+os.environ['OPENAI_API_KEY'] = api_key
 
 # Sample movie knowledge base
 movie_knowledge_base = [