Update app.py

app.py

@@ -13,7 +13,7 @@ DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
 # ----- THIS IS WERE YOU CAN BUILD WHAT YOU WANT ------
 class BasicAgent:
     def __init__(self):
-        openai.api_key = os.getenv("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")  # or hardcode if local test
+        openai.api_key = os.getenv("OPENAI_API_KEY")  # or hardcode if local test
         self.system_prompt = (
             "You are a helpful research assistant. "
             "Only answer with the exact factual answer without explanation. "