Create components/challenge_eval.py

components/challenge_eval.py

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+def evaluate_challenge(user_code):
+    # Simple evaluation (more advanced logic could be added here)
+    if "def" in user_code and "return" in user_code:
+        return "Great! Your code structure seems correct."
+    else:
+        return "It looks like there's an issue with your code. Make sure to define a function and return a result."