diff --git a/lab-python-functions.ipynb b/lab-python-functions.ipynb
index 44d337b..8f1c525 100644
--- a/lab-python-functions.ipynb
+++ b/lab-python-functions.ipynb
@@ -43,11 +43,108 @@
     "\n",
     "\n"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 13,
+   "id": "ddf14b24",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# Productos\n",
+    "products = [\"camisetas\", \"mug\", \"gorras\", \"libros\", \"llaveros\"]\n",
+    "\n",
+    "\n",
+    "def initialize_inventory(products):\n",
+    "    inventory = {}\n",
+    "    print(\"Introduce el stock de cada producto:\")\n",
+    "    for product in products:\n",
+    "        quantity = int(input(f\"{product}: \"))\n",
+    "        inventory[product] = quantity\n",
+    "    return inventory\n",
+    "\n",
+    "\n",
+    "def get_customer_orders(products):\n",
+    "    customer_orders = set()\n",
+    "    while True:\n",
+    "        product = input(\"Ingresa el nombre del producto que deseas ordenar: \").lower()\n",
+    "\n",
+    "        if product in products:\n",
+    "            customer_orders.add(product)\n",
+    "        else:\n",
+    "            print(\"Producto inválido. Usa uno de estos:\", products)\n",
+    "            continue\n",
+    "\n",
+    "        another = input(\"¿Deseas agregar otro producto? (si/no): \").lower()\n",
+    "        if another not in (\"si\", \"sí\", \"s\"):\n",
+    "            break\n",
+    "\n",
+    "    return customer_orders\n",
+    "\n",
+    "\n",
+    "def update_inventory(customer_orders, inventory):\n",
+    "    for product in customer_orders:\n",
+    "        inventory[product] -= 1\n",
+    "\n",
+    "\n",
+    "def print_inventory(inventory):\n",
+    "    print(\"\\nInventario actualizado:\")\n",
+    "    for product, quantity in inventory.items():\n",
+    "        print(product, \":\", quantity)\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "12a87c44",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Introduce el stock de cada producto:\n",
+      "\n",
+      "Inventario actualizado:\n",
+      "camisetas : 20\n",
+      "mug : 10\n",
+      "gorras : 30\n",
+      "libros : 20\n",
+      "llaveros : 50\n",
+      "\n",
+      "Productos pedidos: {'llaveros', 'gorras', 'camisetas'}\n",
+      "\n",
+      "Inventario actualizado:\n",
+      "camisetas : 19\n",
+      "mug : 10\n",
+      "gorras : 29\n",
+      "libros : 20\n",
+      "llaveros : 49\n"
+     ]
+    }
+   ],
+   "source": [
+    "# 1️ Cargar inventario\n",
+    "inventory = initialize_inventory(products)\n",
+    "\n",
+    "# 2️ Mostrar inventario cargado\n",
+    "print_inventory(inventory)\n",
+    "\n",
+    "# 3️ Pedir productos al cliente\n",
+    "customer_orders = get_customer_orders(products)\n",
+    "print(\"\\nProductos pedidos:\", customer_orders)\n",
+    "\n",
+    "# 4️ Actualizar inventario\n",
+    "update_inventory(customer_orders, inventory)\n",
+    "\n",
+    "# 5️ Mostrar inventario final\n",
+    "print_inventory(inventory)\n"
+   ]
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "Python 3",
    "language": "python",
    "name": "python3"
   },
@@ -61,7 +158,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.14.0"
   }
  },
  "nbformat": 4,