diff --git a/lab-python-functions.ipynb b/lab-python-functions.ipynb
index 44d337b..1e0840c 100644
--- a/lab-python-functions.ipynb
+++ b/lab-python-functions.ipynb
@@ -43,11 +43,122 @@
     "\n",
     "\n"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 42,
+   "id": "bd8c032d",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "\n",
+      "Order Statistics:\n",
+      "- Total piece ordered: 4\n",
+      "- Percentage piece: 133.33\n",
+      "\n",
+      "Updated Inventory:\n",
+      "- t-shirt: 19\n",
+      "- mug: 19\n",
+      "- hat: 19\n"
+     ]
+    }
+   ],
+   "source": [
+    "products = [\"t-shirt\", \"mug\", \"hat\"]\n",
+    "\n",
+    "def initialize_inventory(products):\n",
+    "    inventory = {}\n",
+    "    for product in products:\n",
+    "        quantity = int(input(f\"Enter the quantity of {product}: \"))\n",
+    "        inventory[product] = quantity\n",
+    "    return inventory\n",
+    "\n",
+    "def get_customer_orders():\n",
+    "    customer_orders = set()\n",
+    "    for i in range(4):\n",
+    "        order = input(f\"Enter the name of product {i+1} to order: \").lower()\n",
+    "        customer_orders.add(order)\n",
+    "    return customer_orders\n",
+    "\n",
+    "def update_inventory(customer_orders, inventory):\n",
+    "    for product in customer_orders:\n",
+    "        if product in inventory and inventory[product] > 0:\n",
+    "            inventory[product] -= 1\n",
+    "\n",
+    "def calculate_order_statistics(customer_orders, products):\n",
+    "    total_piece_ordered = len(customer_orders)\n",
+    "    percentage_piece = (total_piece_ordered / len(products)) * 100\n",
+    "    return {\"total_piece_ordered\": total_piece_ordered, \"percentage_piece\": round(percentage_piece, 2)}\n",
+    "\n",
+    "def print_order_statistics(order_statistics):\n",
+    "    print(\"\\nOrder Statistics:\")\n",
+    "    for key, value in order_statistics.items():\n",
+    "        print(f\"- {key.replace('_', ' ').capitalize()}: {value}\")\n",
+    "\n",
+    "def print_updated_inventory(inventory):\n",
+    "    print(\"\\nUpdated Inventory:\")\n",
+    "    for product, quantity in inventory.items():\n",
+    "        print(f\"- {product}: {quantity}\")\n",
+    "\n",
+    "inventory = initialize_inventory(products)\n",
+    "customer_orders = get_customer_orders()\n",
+    "update_inventory(customer_orders, inventory)\n",
+    "order_statistics = calculate_order_statistics(customer_orders, products)\n",
+    "print_order_statistics(order_statistics)\n",
+    "print_updated_inventory(inventory)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "e1dfbef2",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "\n",
+    "\n",
+    "def initialize_inventory(products):\n",
+    "    inventory = {}\n",
+    "    for product in products:\n",
+    "        quantity = int(input(f\"Enter the quantity of {product}: \"))\n",
+    "        inventory[product] = quantity\n",
+    "    return inventory\n",
+    "\n",
+    "def get_customer_orders():\n",
+    "    customer_orders = set()\n",
+    "    for i in range(3):\n",
+    "        order = input(f\"Enter the name of product {i+1} to order: \")\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",
+    "\n",
+    "def calculate_order_statistics(customer_orders, products):\n",
+    "    total_ordered = len(customer_orders)\n",
+    "    percentage_unique = (total_ordered / len(products)) * 100\n",
+    "    return {\"total_ordered\": total_ordered, \"percentage_unique\": percentage_unique}\n",
+    "\n",
+    "def print_order_statistics(order_statistics):\n",
+    "    print(\"Order Statistics:\")\n",
+    "    for k, v in order_statistics.items():\n",
+    "        print(f\"{k}: {v}\")\n",
+    "\n",
+    "def print_updated_inventory(inventory):\n",
+    "    print(\"Updated Inventory:\")\n",
+    "    for product, quantity in inventory.items():\n",
+    "        print(f\"{product}: {quantity}\")"
+   ]
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "data-analyst",
    "language": "python",
    "name": "python3"
   },
@@ -61,7 +172,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.13.5"
   }
  },
  "nbformat": 4,