diff --git a/lab-python-functions.ipynb b/lab-python-functions.ipynb
index 44d337b..3f92f0e 100644
--- a/lab-python-functions.ipynb
+++ b/lab-python-functions.ipynb
@@ -43,11 +43,115 @@
     "\n",
     "\n"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 12,
+   "id": "776bba80",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Customer orders: {'keychain', 'book'}\n",
+      "Order Statistics:\n",
+      "Total Products Ordered: 2\n",
+      "Percentage of Products Ordered: 10.0%\n",
+      "Updated inventory:\n",
+      "t-shirt: 4\n",
+      "mug: 4\n",
+      "hat: 4\n",
+      "book: 3\n",
+      "keychain: 3\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Let's readjust the code to the new requirements. \n",
+    "\n",
+    "\n",
+    "\n",
+    "# Defining all the functions: \n",
+    "# inventory initialization function\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",
+    "# customer orders function\n",
+    "def get_customer_orders():\n",
+    "    customer_orders = set()\n",
+    "    n = 0\n",
+    "    while n >= 0:\n",
+    "        order = input(f\"Enter the name of a product you would like to order {n+1}: \")\n",
+    "        if order in products and inventory[order] > 0:\n",
+    "            customer_orders.add(order)\n",
+    "            n+=1    \n",
+    "        else:\n",
+    "            print(f\"{order} is not available in the products list.\\nWe only sell t-shirts, mugs, hats, books, keychains\")\n",
+    "        order_more = input(\"Would you like to order more products? \\n type Y for \\\"yes\\\", N for \\\"no\\\": \").strip().lower()\n",
+    "        while order_more not in [\"y\", \"n\"]:\n",
+    "            print(\"Invalid input. Please type Y for \\\"yes\\\" or N for \\\"no\\\".\")\n",
+    "            order_more = input(\"Would you like to order more products? \\n type Y for \\\"yes\\\", N for \\\"no\\\": \").strip().lower()\n",
+    "            continue\n",
+    "        if order_more == \"Y\" or order_more == \"y\":\n",
+    "            continue\n",
+    "        else:\n",
+    "            break\n",
+    "    return customer_orders   \n",
+    "\n",
+    "# order statistics function\n",
+    "def calculate_order_statistics(customer_orders, inventory):\n",
+    "    total_products_ordered = len(customer_orders)\n",
+    "    percentage_products_ordered = (total_products_ordered / sum(inventory.values())) * 100\n",
+    "    return total_products_ordered, percentage_products_ordered\n",
+    "\n",
+    "# print order statistics function\n",
+    "def print_order_statistics(order_statistics):\n",
+    "    total_products_ordered, percentage_products_ordered = order_statistics\n",
+    "    print(\"Order Statistics:\")\n",
+    "    print(f\"Total Products Ordered: {total_products_ordered}\")\n",
+    "    print(f\"Percentage of Products Ordered: {percentage_products_ordered}%\")\n",
+    "    return None\n",
+    "# inventory update function\n",
+    "def print_updated_inventory(customer_orders, inventory):\n",
+    "    print(\"Updated inventory:\")\n",
+    "    for product in customer_orders:\n",
+    "        if product in inventory and inventory[product] > 0:\n",
+    "            inventory[product] -= 1\n",
+    "        elif product in inventory and inventory[product] == 0:\n",
+    "            print(f\"{product} is out of stock.\")\n",
+    "    for p in inventory:\n",
+    "        print(f\"{p}: {inventory[p]}\")\n",
+    "    return None\n",
+    "\n",
+    "#Define the list of products\n",
+    "products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
+    "inventory = initialize_inventory(products)\n",
+    "\n",
+    "customer_orders = get_customer_orders()\n",
+    "\n",
+    "print(\"Customer orders:\", customer_orders)\n",
+    "\n",
+    "# The statistic we needed: \n",
+    "\n",
+    "order_statistics = calculate_order_statistics(customer_orders, inventory)\n",
+    "print_order_statistics(order_statistics)\n",
+    "\n",
+    "\n",
+    "print_updated_inventory(customer_orders, inventory)\n",
+    "\n",
+    "\n",
+    "\n"
+   ]
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "Python 3",
    "language": "python",
    "name": "python3"
   },
@@ -61,7 +165,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.14.7"
   }
  },
  "nbformat": 4,