add my exercise

my_exercise _4.py

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+# I made a list first
+my_list = [1, 2, 3, 4, 12, 45, 65, 77, 8, 1, 2]
+
+# i defined a empty set:
+repeating_elements = set()
+
+# here I use a for loop to find out repeating elements:
+for x in my_list:
+    if my_list.count(x) > 1:
+        repeating_elements.add(x)
+print("repeating_items", repeating_elements)
+
+
+# exercise 2:
+
+# I define a restaurants menu with a python dictionary:
+menu = {
+    'pizza': 10,
+    'sushi': 8,
+    'pasta': 15,
+    'soft_drinks': 3,
+    'french fries': 5
+}
+print(menu)
+index = 1
+for dish in menu:
+    print(f'{index}. {dish}: {menu[dish]} euro')
+    index += 1
+
+# I define a  while loop to get customer order:
+customer_order = {}
+while True:
+    order = input("enter a dish name or number:( enter 'finish' if you dont need somthing else ): ")
+    if order.lower() == 'finish':
+        break
+
+    dish = menu.get(order)
+    if dish:
+        customer_order[order] = dish
+        print(f"{order} added to your order. ")
+    else:
+        print("it's wrong choice! please enter a valid dish name or number. ")
+# here I am going to calculate customer final price:
+print('\n complete orders: ')
+for dish, price in customer_order.items():
+    print(f"{dish}: {price} euro")
+
+total_price = sum(customer_order.values())
+print(f"\n final price: {total_price} euro")
+
+
+