diff --git a/lab-python-functions.ipynb b/lab-python-functions.ipynb
index 44d337b..848fbdb 100644
--- a/lab-python-functions.ipynb
+++ b/lab-python-functions.ipynb
@@ -43,11 +43,73 @@
     "\n",
     "\n"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "6f3ab339",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def initialize_inventory(products):\n",
+    "    inventory = {}\n",
+    "    print(\"Initialize Inventory:\")\n",
+    "    for product in products:\n",
+    "        quantity = int(input(f\"Enter quantity available for '{product}': \"))\n",
+    "        inventory[product] = quantity\n",
+    "    return inventory\n",
+    "\n",
+    "def get_customer_orders():\n",
+    "    customer_orders = set()\n",
+    "    print(\"\\nEnter customer orders (type 'done' to finish):\")\n",
+    "    while True:\n",
+    "        order = input(\"Enter product name: \").strip().lower()\n",
+    "        if order == 'done':\n",
+    "            break\n",
+    "        customer_orders.add(order)\n",
+    "    return customer_orders\n",
+    "\n",
+    "def update_inventory(customer_orders, inventory):\n",
+    "    for order in customer_orders:\n",
+    "        if order in inventory and inventory[order] > 0:\n",
+    "            inventory[order] -= 1\n",
+    "        elif order in inventory:\n",
+    "            print(f\"'{order}' is out of stock.\")\n",
+    "        else:\n",
+    "            print(f\"'{order}' is not available in the inventory.\")\n",
+    "\n",
+    "def calculate_order_statistics(customer_orders, products):\n",
+    "    total_ordered = len(customer_orders)\n",
+    "    unique_ordered = len([item for item in customer_orders if item in products])\n",
+    "    percentage_unique = (unique_ordered / len(products)) * 100\n",
+    "    return total_ordered, percentage_unique\n",
+    "\n",
+    "def print_order_statistics(order_stats):\n",
+    "    total_ordered, percentage_unique = order_stats\n",
+    "    print(\"\\nOrder Statistics:\")\n",
+    "    print(f\"- Total products ordered: {total_ordered}\")\n",
+    "    print(f\"- Percentage of unique products ordered: {percentage_unique:.2f}%\")\n",
+    "\n",
+    "def print_updated_inventory(inventory):\n",
+    "    print(\"\\nUpdated Inventory:\")\n",
+    "    for product, quantity in inventory.items():\n",
+    "        print(f\"- {product}: {quantity} left\")\n",
+    "\n",
+    "# Main program logic\n",
+    "products = ['apple', 'banana', 'orange', 'grapes', 'mango']\n",
+    "\n",
+    "inventory = initialize_inventory(products)\n",
+    "customer_orders = get_customer_orders()\n",
+    "update_inventory(customer_orders, inventory)\n",
+    "order_stats = calculate_order_statistics(customer_orders, products)\n",
+    "print_order_statistics(order_stats)\n",
+    "print_updated_inventory(inventory)\n"
+   ]
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "base",
    "language": "python",
    "name": "python3"
   },
@@ -61,7 +123,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.12.7"
   }
  },
  "nbformat": 4,