diff --git a/lab-python-functions.ipynb b/lab-python-functions.ipynb
index 44d337b..2b5ff14 100644
--- a/lab-python-functions.ipynb
+++ b/lab-python-functions.ipynb
@@ -39,15 +39,188 @@
     "\n",
     "- Consider the input parameters required for each function and their return values.\n",
     "- Utilize function parameters and return values to transfer data between functions.\n",
-    "- Test your functions individually to ensure they work correctly.\n",
+    "- Test your functions individually to ensure they work correctly."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 40,
+   "id": "771ec5e6",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def initialize_inventory(products):\n",
+    "    \"\"\"\n",
+    "    Inicializa el inventario pidiendo al usuario la cantidad disponible de cada producto.\n",
+    "    Devuelve un diccionario con el formato {producto: cantidad}.\n",
+    "    \"\"\"\n",
+    "    inventory = {}\n",
+    "\n",
+    "    for product in products:\n",
+    "        cantidad = input(f\"Introduce la cantidad disponible de '{product}': \")\n",
+    "        if not cantidad.isdigit():\n",
+    "            print(\"Cantidad no válida. Se establece en 0.\")\n",
+    "            cantidad = 0\n",
+    "        inventory[product] = int(cantidad)\n",
+    "\n",
+    "    return inventory\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 41,
+   "id": "2071dab4",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def get_customer_orders():\n",
+    "    \"\"\"\n",
+    "    Solicita al usuario los productos que desea pedir.\n",
+    "    Finaliza cuando el usuario escribe 'done'.\n",
+    "    Devuelve un conjunto (set) con los productos pedidos.\n",
+    "    \"\"\"\n",
+    "    customer_orders = set()\n",
+    "\n",
+    "    while True:\n",
+    "        producto = input(\"Introduce el producto deseado (o 'done' para finalizar): \").lower()\n",
+    "        if producto == \"done\":\n",
+    "            break\n",
+    "        customer_orders.add(producto)\n",
+    "\n",
+    "    return customer_orders\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 42,
+   "id": "064c7f31",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def update_inventory(customer_orders, inventory):\n",
+    "    \"\"\"\n",
+    "    Actualiza el inventario según los pedidos del cliente.\n",
+    "    Si el producto existe y hay stock, resta una unidad por cada pedido.\n",
+    "    Si no hay stock o el producto no existe, se ignora.\n",
+    "    Devuelve el inventario actualizado.\n",
+    "    \"\"\"\n",
+    "    for producto in customer_orders:\n",
+    "        if producto in inventory:\n",
+    "            if inventory[producto] > 0:\n",
+    "                inventory[producto] -= 1\n",
+    "            else:\n",
+    "                print(f\"No hay stock de '{producto}'.\")\n",
+    "        else:\n",
+    "            print(f\"'{producto}' no existe en el inventario.\")\n",
+    "    return inventory\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 43,
+   "id": "d28df7d6",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def calculate_order_statistics(customer_orders, products):\n",
+    "    \"\"\"\n",
+    "    Calcula estadísticas básicas de los pedidos:\n",
+    "    - Total de productos pedidos.\n",
+    "    - Porcentaje de productos únicos pedidos respecto al total disponible.\n",
+    "    \"\"\"\n",
+    "    total_pedidos = len(customer_orders)\n",
+    "    total_disponibles = len(products)\n",
+    "    porcentaje_unicos = (total_pedidos / total_disponibles) * 100\n",
+    "    return total_pedidos, porcentaje_unicos\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 44,
+   "id": "29e5d669",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def print_order_statistics(order_statistics):\n",
+    "    \"\"\"\n",
+    "    Imprime las estadísticas del pedido de forma legible.\n",
+    "    \"\"\"\n",
+    "    total_pedidos, porcentaje_unicos = order_statistics\n",
+    "\n",
+    "    print(\"\\nESTADÍSTICAS DEL PEDIDO\")\n",
+    "    print(\"-\" * 35)\n",
+    "    print(f\"Total de productos pedidos: {total_pedidos}\")\n",
+    "    print(f\"Porcentaje de productos únicos pedidos: {porcentaje_unicos:.2f}%\")\n",
+    "    print(\"-\" * 35)\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 45,
+   "id": "8455f78a",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def print_updated_inventory(inventory):\n",
+    "    \"\"\"\n",
+    "    Imprime el inventario actualizado producto por producto.\n",
+    "    \"\"\"\n",
+    "    print(\"\\nINVENTARIO ACTUALIZADO\")\n",
+    "    print(\"-\" * 30)\n",
+    "\n",
+    "    for producto, cantidad in inventory.items():\n",
+    "        print(f\"- {producto}: {cantidad} unidades\")\n",
+    "\n",
+    "    print(\"-\" * 30)\n",
+    "    print(\"Fin del inventario.\\n\")\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 46,
+   "id": "cfb79550",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "'hay' no existe en el inventario.\n",
+      "\n",
+      "ESTADÍSTICAS DEL PEDIDO\n",
+      "-----------------------------------\n",
+      "Total de productos pedidos: 3\n",
+      "Porcentaje de productos únicos pedidos: 60.00%\n",
+      "-----------------------------------\n",
+      "\n",
+      "INVENTARIO ACTUALIZADO\n",
+      "------------------------------\n",
+      "- t-shirt: 49 unidades\n",
+      "- mug: 29 unidades\n",
+      "- hat: 45 unidades\n",
+      "- book: 60 unidades\n",
+      "- keychain: 80 unidades\n",
+      "------------------------------\n",
+      "Fin del inventario.\n",
+      "\n"
+     ]
+    }
+   ],
+   "source": [
+    "products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
     "\n",
-    "\n"
+    "inventory = initialize_inventory(products)\n",
+    "customer_orders = get_customer_orders()\n",
+    "updated_inventory = update_inventory(customer_orders, inventory)\n",
+    "order_statistics = calculate_order_statistics(customer_orders, products)\n",
+    "print_order_statistics(order_statistics)\n",
+    "print_updated_inventory(updated_inventory)\n"
    ]
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "Python 3",
    "language": "python",
    "name": "python3"
   },
@@ -61,7 +234,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.13.7"
   }
  },
  "nbformat": 4,