diff --git a/lab-python-error-handling.ipynb b/lab-python-error-handling.ipynb
index f4c6ef6..6a0fe38 100644
--- a/lab-python-error-handling.ipynb
+++ b/lab-python-error-handling.ipynb
@@ -72,11 +72,161 @@
     "\n",
     "4. Test your code by running the program and deliberately entering invalid quantities and product names. Make sure the error handling mechanism works as expected.\n"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "id": "49685fe2",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Quantity cannot be negative. Please enter a valid quantity.\n",
+      "Quantity cannot be negative. Please enter a valid quantity.\n",
+      "Invalid input. Please enter a valid quantity.\n"
+     ]
+    }
+   ],
+   "source": [
+    "products = [\"t-shirt\", \"mug\", \"book\", \"hat\", \"keychain\"]\n",
+    "\n",
+    "def initialize_inventory(products):\n",
+    "    inventory = {}\n",
+    "    for product in products:\n",
+    "        valid_input = False\n",
+    "        while not valid_input:\n",
+    "            try:\n",
+    "                quantity = int(input(f\"Enter the quantity of {product}s available: \"))\n",
+    "                if quantity >= 0:\n",
+    "                    inventory[product] = quantity\n",
+    "                    valid_input = True\n",
+    "                else:\n",
+    "                    print(\"Quantity cannot be negative. Please enter a valid quantity.\")\n",
+    "            except ValueError:\n",
+    "                print(\"Invalid input. Please enter a valid quantity.\")\n",
+    "    return inventory\n",
+    "inventory = initialize_inventory(products)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "id": "895ab404",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "{'t-shirt': 5, 'mug': 3, 'book': 0, 'hat': 6, 'keychain': 4}\n"
+     ]
+    }
+   ],
+   "source": [
+    "print(inventory)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 9,
+   "id": "7a6301ab",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Error. Please enter a numeric value.\n",
+      "Number of product cannot be negative. Please enter the order again.\n",
+      "Error. papa is not in the inventory\n",
+      "Sorry book it's out of stock\n"
+     ]
+    }
+   ],
+   "source": [
+    "def get_customer_orders(inventory):\n",
+    "    customer_order = {}\n",
+    "\n",
+    "    valid_input = False\n",
+    "    while not valid_input:\n",
+    "        try:\n",
+    "            quantity_orders = int(input(f\"How many products do you want to order: \"))\n",
+    "            if quantity_orders > 0:\n",
+    "                valid_input = True\n",
+    "            else:\n",
+    "                print(\"Number of product cannot be negative. Please enter the order again.\")\n",
+    "        except ValueError: \n",
+    "            print(\"Error. Please enter a numeric value.\")\n",
+    "\n",
+    "    for o in range(quantity_orders):\n",
+    "        valid_product = False\n",
+    "        while not valid_product:\n",
+    "            try:\n",
+    "                order = input(\"Please enter the name of the product: \")\n",
+    "                stock = inventory[order]\n",
+    "                if stock > 0:\n",
+    "                    customer_order[order] = order\n",
+    "                    valid_product = True\n",
+    "                else:\n",
+    "                    print(f\"Sorry {order} it's out of stock\")\n",
+    "            except KeyError:\n",
+    "                print(f\"Error. {order} is not in the inventory\")\n",
+    "    \n",
+    "    return customer_order\n",
+    "\n",
+    "customer_order = get_customer_orders(inventory)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 17,
+   "id": "5ecc0f4c",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Price cannot be a word. Enter a number.\n",
+      "Price cannot be negative. Enter price again.\n",
+      "The order's total price is: 20.0\n"
+     ]
+    }
+   ],
+   "source": [
+    "def products_price (customer_order):\n",
+    "    prices = {}\n",
+    "\n",
+    "    for product in customer_order:\n",
+    "        valid_input = False\n",
+    "        while not valid_input:\n",
+    "            try:\n",
+    "                price = float(input(f\"Please introduce the price of {product} in the customer order: \"))\n",
+    "                if price >= 0:\n",
+    "                    prices[product] = price\n",
+    "                    valid_input = True\n",
+    "\n",
+    "                else:\n",
+    "                    print(\"Price cannot be negative. Enter price again.\")\n",
+    "\n",
+    "            except ValueError:\n",
+    "                print(\"Price cannot be a word. Enter a number.\")\n",
+    "    \n",
+    "            \n",
+    "    total_price = sum(prices.values())\n",
+    "    print(f\"The order's total price is: {total_price}\")\n",
+    "    \n",
+    "    return total_price  \n",
+    "\n",
+    "prices = products_price(customer_order)       \n"
+   ]
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "base",
    "language": "python",
    "name": "python3"
   },
@@ -90,7 +240,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.13.9"
   }
  },
  "nbformat": 4,