diff --git a/Chapter_04/4-13_buffet.py b/Chapter_04/4-13_buffet.py
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+++ b/Chapter_04/4-13_buffet.py
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+# Exercise 4-12 Buffet
+# Learning Objective: Use tuple, list it with for loop and reassign it. 
+
+buffetFoods = ('carrots', 'potatoes', 'salad', 'beef', 'chicken')
+print("The buffet offers the following foods:")
+for food in buffetFoods:
+	print(food)
+#try to modify to ensure error shows up: 
+# buffetFoods[3] = 'pork' ---> Confirmed error raised 
+
+#menu changed: 
+buffetFoods = ('carrots', 'string beans', 'corn', 'beef', 'chicken')
+print("\nThe buffet now offers the following foods: ")
+for food in buffetFoods:
+	print(food)