diff --git a/lab-python-error-handling.ipynb b/lab-python-error-handling.ipynb
index 3e50ef8..f46a553 100644
--- a/lab-python-error-handling.ipynb
+++ b/lab-python-error-handling.ipynb
@@ -41,18 +41,143 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 2,
    "id": "cc2c441d-9dcf-4817-b097-cf6cbe440846",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "✅ Lista de débitos generada correctamente.\n",
+      "Ejecución finalizada (get_debits).\n",
+      "[(-1200, 'debit')]\n"
+     ]
+    }
+   ],
    "source": [
-    "# your code goes here"
+    "# your code goes here\n",
+    "def get_debits(transactions):\n",
+    "    try:\n",
+    "        if not isinstance(transactions, list):\n",
+    "            raise TypeError(\"❌ Error: la variable 'transactions' debe ser una lista.\")\n",
+    "        debits = list(filter(lambda x: x[1] == 'debit', transactions))\n",
+    "        if not debits:\n",
+    "            raise ValueError(\"⚠️ No se encontraron transacciones de tipo 'debit'.\")\n",
+    "    except (TypeError, ValueError, IndexError) as e:\n",
+    "        print(f\"Error al obtener los débitos: {e}\")\n",
+    "        debits = []\n",
+    "    else:\n",
+    "        print(\"✅ Lista de débitos generada correctamente.\")\n",
+    "    finally:\n",
+    "        print(\"Ejecución finalizada (get_debits).\")\n",
+    "    return debits\n",
+    "\n",
+    "transactions = [(-1200, 'debit'), (2500, 'credit')]\n",
+    "print(get_debits(transactions))\n",
+    "\n",
+    "def sort_debits_descending(debits):\n",
+    "    try:\n",
+    "        if not debits:\n",
+    "            raise ValueError(\"⚠️ La lista de débitos está vacía.\")\n",
+    "        sort_descending = lambda x: x[0]\n",
+    "        debits_sorted = sorted(debits, key=sort_descending, reverse=True)\n",
+    "    except Exception as e:\n",
+    "        print(f\"Error al ordenar débitos: {e}\")\n",
+    "        debits_sorted = []\n",
+    "    else:\n",
+    "        print(\"✅ Débitos ordenados correctamente.\")\n",
+    "    finally:\n",
+    "        print(\"Ejecución finalizada (sort_debits_descending).\")\n",
+    "    return debits_sorted\n",
+    "\n",
+    "def apply_interest(balances, rate=0.05):\n",
+    "    try:\n",
+    "        if not all(isinstance(x, (int, float)) for x in balances):\n",
+    "            raise TypeError(\"❌ Todos los elementos deben ser numéricos.\")\n",
+    "        new_balances = list(map(lambda x: x * (1 + rate), balances))\n",
+    "    except TypeError as e:\n",
+    "        print(f\"Error al aplicar interés: {e}\")\n",
+    "        new_balances = []\n",
+    "    else:\n",
+    "        print(\"✅ Interés aplicado correctamente.\")\n",
+    "    finally:\n",
+    "        print(\"Ejecución finalizada (apply_interest).\")\n",
+    "    return new_balances\n",
+    "\n",
+    "def update_accounts_interest(accounts):\n",
+    "    try:\n",
+    "        if not isinstance(accounts, list):\n",
+    "            raise TypeError(\"❌ 'accounts' debe ser una lista.\")\n",
+    "        updated_accounts = list(map(\n",
+    "            lambda acc: {'balance': acc['balance'] * (1 + acc['interest_rate'])},\n",
+    "            accounts\n",
+    "        ))\n",
+    "    except KeyError as e:\n",
+    "        print(f\"Error: falta la clave {e} en uno de los diccionarios.\")\n",
+    "        updated_accounts = []\n",
+    "    except TypeError as e:\n",
+    "        print(f\"Error de tipo: {e}\")\n",
+    "        updated_accounts = []\n",
+    "    else:\n",
+    "        print(\"✅ Cuentas actualizadas correctamente.\")\n",
+    "    finally:\n",
+    "        print(\"Ejecución finalizada (update_accounts_interest).\")\n",
+    "    return updated_accounts\n",
+    "\n",
+    "from functools import reduce\n",
+    "\n",
+    "def total_negative_balances(balances):\n",
+    "    try:\n",
+    "        if not balances:\n",
+    "            raise ValueError(\"⚠️ La lista de balances está vacía.\")\n",
+    "        negative_balances = list(filter(lambda x: x < 0, balances))\n",
+    "        total_negative = reduce(lambda a, b: a + b, negative_balances)\n",
+    "    except TypeError as e:\n",
+    "        print(f\"Error: tipo de dato incorrecto en la lista. {e}\")\n",
+    "        total_negative = 0\n",
+    "    except ValueError as e:\n",
+    "        print(f\"Error de valor: {e}\")\n",
+    "        total_negative = 0\n",
+    "    else:\n",
+    "        print(\"✅ Total de balances negativos calculado correctamente.\")\n",
+    "    finally:\n",
+    "        print(\"Ejecución finalizada (total_negative_balances).\")\n",
+    "    return total_negative\n",
+    "\n",
+    "def calculate_balance(account):\n",
+    "    try:\n",
+    "        if 'balance' not in account or 'withdrawals' not in account:\n",
+    "            raise KeyError(\"❌ Falta la clave 'balance' o 'withdrawals'.\")\n",
+    "        if not all(isinstance(w, (int, float)) for w in account['withdrawals']):\n",
+    "            raise TypeError(\"❌ Los retiros deben ser valores numéricos.\")\n",
+    "        total_withdrawals = sum(account['withdrawals'])\n",
+    "        remaining_balance = account['balance'] - total_withdrawals\n",
+    "    except (KeyError, TypeError) as e:\n",
+    "        print(f\"Error al calcular balance: {e}\")\n",
+    "        remaining_balance = None\n",
+    "    else:\n",
+    "        print(f\"✅ Balance calculado correctamente: {remaining_balance}\")\n",
+    "    finally:\n",
+    "        print(\"Ejecución finalizada (calculate_balance).\")\n",
+    "    return remaining_balance\n",
+    "\n",
+    "\n",
+    "def calculate_all_balances(accounts):\n",
+    "    try:\n",
+    "        remaining_balances = list(map(calculate_balance, accounts))\n",
+    "    except Exception as e:\n",
+    "        print(f\"Error general al procesar cuentas: {e}\")\n",
+    "        remaining_balances = []\n",
+    "    finally:\n",
+    "        print(\"Ejecución finalizada (calculate_all_balances).\")\n",
+    "    return remaining_balances\n"
    ]
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "Python 3",
    "language": "python",
    "name": "python3"
   },
@@ -66,7 +191,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.12.9"
   }
  },
  "nbformat": 4,