diff --git a/lab-python-error-handling.ipynb b/lab-python-error-handling.ipynb
index f4c6ef6..c905bd0 100644
--- a/lab-python-error-handling.ipynb
+++ b/lab-python-error-handling.ipynb
@@ -72,11 +72,139 @@
     "\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": null,
+   "id": "18803f39",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Inventory initialized: {'apple': 3, 'banana': 5, 'cherry': 2}\n",
+      "Total price of products: $51.00\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Insufficient stock for apple. Only 3 available.\n",
+      "Error: Insufficient stock for apple. Only 3 available.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n",
+      "Error: Product not found in inventory. Please enter a valid product.\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Step 1: Define the function for initializing the inventory with error handling\n",
+    "def initialize_inventory(products):\n",
+    "    inventory = {}\n",
+    "    for product in products:\n",
+    "        valid_quantity = False\n",
+    "        while not valid_quantity:\n",
+    "            try:\n",
+    "                quantity = int(input(f\"Enter the quantity of {product}s available: \"))\n",
+    "                if quantity < 0:\n",
+    "                    raise ValueError(\"Invalid quantity! Please enter a non-negative value.\")\n",
+    "                inventory[product] = quantity\n",
+    "                valid_quantity = True  # Exit the loop once valid input is given\n",
+    "            except ValueError as error:\n",
+    "                print(f\"Error: {error}\")\n",
+    "    return inventory\n",
+    "\n",
+    "# Step 2: Modify the calculate_total_price function to include error handling\n",
+    "def calculate_total_price(products, inventory):\n",
+    "    total_price = 0\n",
+    "    for product in products:\n",
+    "        valid_price = False\n",
+    "        while not valid_price:\n",
+    "            try:\n",
+    "                price = float(input(f\"Enter the price of {product}s: \"))\n",
+    "                if price < 0:\n",
+    "                    raise ValueError(\"Invalid price! Please enter a non-negative value.\")\n",
+    "                total_price += price * inventory.get(product, 0)\n",
+    "                valid_price = True  # Exit the loop once valid price is given\n",
+    "            except ValueError as error:\n",
+    "                print(f\"Error: {error}\")\n",
+    "    return total_price\n",
+    "\n",
+    "# Step 3: Modify the get_customer_orders function to include error handling\n",
+    "def get_customer_orders(inventory):\n",
+    "    orders = []\n",
+    "    valid_order_count = False\n",
+    "    while not valid_order_count:\n",
+    "        try:\n",
+    "            num_orders = int(input(\"Enter the number of orders: \"))\n",
+    "            if num_orders < 0:\n",
+    "                raise ValueError(\"Number of orders cannot be negative!\")\n",
+    "            valid_order_count = True  # Exit the loop once valid order count is entered\n",
+    "        except ValueError as error:\n",
+    "            print(f\"Error: {error}\")\n",
+    "    \n",
+    "    for _ in range(num_orders):\n",
+    "        valid_product = False\n",
+    "        while not valid_product:\n",
+    "            product = input(\"Enter the product name: \")\n",
+    "            if product not in inventory:\n",
+    "                print(\"Error: Product not found in inventory. Please enter a valid product.\")\n",
+    "            elif inventory[product] <= 0:\n",
+    "                print(f\"Error: {product} is out of stock. Please choose another product.\")\n",
+    "            else:\n",
+    "                valid_quantity = False\n",
+    "                while not valid_quantity:\n",
+    "                    try:\n",
+    "                        quantity = int(input(f\"Enter the quantity of {product}s to order: \"))\n",
+    "                        if quantity <= 0:\n",
+    "                            raise ValueError(\"Quantity must be a positive integer!\")\n",
+    "                        if quantity > inventory[product]:\n",
+    "                            raise ValueError(f\"Insufficient stock for {product}. Only {inventory[product]} available.\")\n",
+    "                        inventory[product] -= quantity  # Reduce stock after successful order\n",
+    "                        orders.append((product, quantity))\n",
+    "                        valid_quantity = True  # Exit the loop once valid quantity is entered\n",
+    "                valid_product = True  # Exit the loop once valid product is chosen\n",
+    "    return orders\n",
+    "\n",
+    "# Example usage of the functions:\n",
+    "products = ['apple', 'banana', 'cherry']\n",
+    "inventory = initialize_inventory(products)\n",
+    "print(\"Inventory initialized:\", inventory)\n",
+    "\n",
+    "# Assuming prices are set for each product\n",
+    "total_price = calculate_total_price(products, inventory)\n",
+    "print(f\"Total price of products: ${total_price:.2f}\")\n",
+    "\n",
+    "# Get customer orders\n",
+    "orders = get_customer_orders(inventory)\n",
+    "print(\"Customer orders:\", orders)\n"
+   ]
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "base",
    "language": "python",
    "name": "python3"
   },
@@ -90,7 +218,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.12.3"
   }
  },
  "nbformat": 4,