diff --git a/lab-python-error-handling.ipynb b/lab-python-error-handling.ipynb
index f4c6ef6..6627f0f 100644
--- a/lab-python-error-handling.ipynb
+++ b/lab-python-error-handling.ipynb
@@ -2,10 +2,11 @@
  "cells": [
   {
    "cell_type": "markdown",
-   "id": "25d7736c-ba17-4aff-b6bb-66eba20fbf4e",
+   "id": "40485476",
    "metadata": {},
    "source": [
-    "# Lab | Error Handling"
+    "# Lab | Error Handling\n",
+    "---"
    ]
   },
   {
@@ -18,8 +19,8 @@
     "The implementation of your code for managing customer orders assumes that the user will always enter a valid input. \n",
     "\n",
     "For example, we could modify the `initialize_inventory` function to include error handling.\n",
-    "   - If the user enters an invalid quantity (e.g., a negative value or a non-numeric value), display an error message and ask them to re-enter the quantity for that product.\n",
-    "   - Use a try-except block to handle the error and continue prompting the user until a valid quantity is entered.\n",
+    "   - **If the user enters an invalid quantity** (e.g., a negative value or a non-numeric value), **display an error message** and **ask them to re-enter** the quantity for that product.\n",
+    "   - Use a **``try-except``** block to handle the error and continue prompting the user **until a valid quantity is entered**.\n",
     "\n",
     "```python\n",
     "# Step 1: Define the function for initializing the inventory with error handling\n",
@@ -72,11 +73,364 @@
     "\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": "markdown",
+   "id": "549c919f",
+   "metadata": {},
+   "source": [
+    "---\n",
+    "---\n",
+    "# Solved Lab | Error Handling"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "399e7e87",
+   "metadata": {},
+   "source": [
+    "---\n",
+    "### STEP 1\n",
+    "modify the `initialize_inventory` function to include error handling.\n",
+    "   - **If the user enters an invalid quantity** (e.g., a negative value or a non-numeric value), **display an error message** and **ask them to re-enter** the quantity for that product.\n",
+    "   - Use a **``try-except``** block to handle the error and continue prompting the user **until a valid quantity is entered**."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "4f673274",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Invalid input: invalid literal for int() with base 10: 'a'. Please enter a non-negative integer.\n",
+      "Invalid input: invalid literal for int() with base 10: 'f'. Please enter a non-negative integer.\n",
+      "Invalid input: invalid literal for int() with base 10: 'g'. Please enter a non-negative integer.\n",
+      "Invalid input: invalid literal for int() with base 10: 'apple'. Please enter a non-negative integer.\n",
+      "Invalid input: invalid literal for int() with base 10: 'Apple'. Please enter a non-negative integer.\n",
+      "Invalid input: invalid literal for int() with base 10: 'Apples'. Please enter a non-negative integer.\n",
+      "Invalid input: invalid literal for int() with base 10: 'Cake'. Please enter a non-negative integer.\n",
+      "Invalid input: invalid literal for int() with base 10: ''. Please enter a non-negative integer.\n",
+      "Invalid input: invalid literal for int() with base 10: ''. Please enter a non-negative integer.\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Step 1: Define the function for initializing the inventory with error handling\n",
+    "def initialize_inventory(products):\n",
+    "    \"\"\"\n",
+    "    Initialize inventory quantities for a list of products.\n",
+    "    Ensures that the user enters valid non-negative integers.\n",
+    "    \n",
+    "    Args:\n",
+    "        products (list): List of product names.\n",
+    "    \n",
+    "    Returns:\n",
+    "        dict: Dictionary with product names as keys and quantities as values.\n",
+    "    \"\"\"\n",
+    "    inventory = {}\n",
+    "    \n",
+    "    for product in products:\n",
+    "        while True:\n",
+    "            try:\n",
+    "                # Ask the user for quantity\n",
+    "                quantity = input(f\"Enter quantity for {product}: \")\n",
+    "                \n",
+    "                # Convert input to integer\n",
+    "                quantity = int(quantity)\n",
+    "                \n",
+    "                # Check for negative values\n",
+    "                if quantity < 0:\n",
+    "                    raise ValueError(\"Quantity cannot be negative.\")\n",
+    "                \n",
+    "                # Valid quantity, store it and break the loop\n",
+    "                inventory[product] = quantity\n",
+    "                break\n",
+    "            \n",
+    "            except ValueError as e:\n",
+    "                # Handle non-numeric or negative inputs\n",
+    "                print(f\"Invalid input: {e}. Please enter a non-negative integer.\")\n",
+    "    \n",
+    "    return inventory\n",
+    "\n",
+    "# Test the function:\n",
+    "products_list = [\"Apples\", \"Bananas\", \"Oranges\"]\n",
+    "inventory = initialize_inventory(products_list)\n",
+    "print(\"Inventory initialized:\", inventory)\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "7711e9ff",
+   "metadata": {},
+   "source": [
+    "---\n",
+    "### STEP 2\n",
+    "2. Modify the `calculate_total_price` function to include error handling.\n",
+    "   \n",
+    "   - If the user enters an invalid price (e.g., a negative value or a non-numeric value),\n",
+    "   - display an error message and ask them to re-enter the price for that product.\n",
+    "   \n",
+    "   - Use a try-except block to handle the error and continue prompting the user until a valid price is entered."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "id": "1136ebce",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Invalid input: could not convert string to float: 'a'. Please enter a non-negative number.\n",
+      "Total price: $45.00\n"
+     ]
+    }
+   ],
+   "source": [
+    "def calculate_total_price(products):\n",
+    "    \"\"\"\n",
+    "    Ask the user to enter the price for each product and calculate the total price.\n",
+    "    Ensures valid, non-negative numeric input.\n",
+    "\n",
+    "    Args:\n",
+    "        products (list): List of product names.\n",
+    "\n",
+    "    Returns:\n",
+    "        float: Total price of all products.\n",
+    "    \"\"\"\n",
+    "    total_price = 0.0\n",
+    "    \n",
+    "    for product in products:\n",
+    "        while True:\n",
+    "            try:\n",
+    "                # Ask user for the price\n",
+    "                price = input(f\"Enter price for {product}: \")\n",
+    "                \n",
+    "                # Convert input to float\n",
+    "                price = float(price)\n",
+    "                \n",
+    "                # Check for negative price\n",
+    "                if price < 0:\n",
+    "                    raise ValueError(\"Price cannot be negative.\")\n",
+    "                \n",
+    "                # Valid price, add to total and break loop\n",
+    "                total_price += price\n",
+    "                break\n",
+    "            \n",
+    "            except ValueError as e:\n",
+    "                print(f\"Invalid input: {e}. Please enter a non-negative number.\")\n",
+    "    \n",
+    "    return total_price\n",
+    "\n",
+    "# Example usage:\n",
+    "products_list = [\"Apples\", \"Bananas\", \"Oranges\"]\n",
+    "total = calculate_total_price(products_list)\n",
+    "print(f\"Total price: ${total:.2f}\")\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "63b63ca9",
+   "metadata": {},
+   "source": [
+    "---\n",
+    "### STEP 3\n",
+    "3. Modify the `get_customer_orders` function to include error handling.\n",
+    "   - If the user enters an invalid number of orders (e.g., a negative value or a non-numeric value), \n",
+    "      - display an error message and ask them to re-enter the number of orders.\n",
+    "   - If the user enters an invalid product name (e.g., a product name that is not in the inventory), or that doesn't have stock available, \n",
+    "      - display an error message and ask them to re-enter the product name. \n",
+    "   - *Hint*: you will need to pass inventory as a parameter*\n",
+    "   - Use a `try-except` block to handle the error and continue prompting the user until a valid product name is entered.\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "ae63c5c8",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def get_customer_orders(inventory):\n",
+    "    \"\"\"\n",
+    "    Ask the user for their orders, including quantity and product name.\n",
+    "    Validates:\n",
+    "      - Number of orders (non-negative integer)\n",
+    "      - Product exists in inventory\n",
+    "      - Product has available stock\n",
+    "\n",
+    "    Args:\n",
+    "        inventory (dict): Dictionary of product names and available quantities\n",
+    "\n",
+    "    Returns:\n",
+    "        dict: Customer orders with product names and ordered quantities\n",
+    "    \"\"\"\n",
+    "    orders = {}\n",
+    "\n",
+    "    print(\"\\nEnter your orders:\")\n",
+    "\n",
+    "    while True:\n",
+    "        try:\n",
+    "            num_orders = input(\"How many different products do you want to order? \")\n",
+    "            num_orders = int(num_orders)\n",
+    "            if num_orders < 0:\n",
+    "                raise ValueError(\"Number of orders cannot be negative.\")\n",
+    "            break\n",
+    "        except ValueError as e:\n",
+    "            print(f\"Invalid input: {e}. Please enter a non-negative integer.\")\n",
+    "\n",
+    "    for i in range(num_orders):\n",
+    "        while True:\n",
+    "            product_name = input(f\"Enter product name for order #{i+1}: \").strip()\n",
+    "            \n",
+    "            # Check if product exists in inventory\n",
+    "            if product_name not in inventory:\n",
+    "                print(\"Invalid product name. Please choose a product from the inventory.\")\n",
+    "                continue\n",
+    "            \n",
+    "            # Check if product has stock available\n",
+    "            if inventory[product_name] == 0:\n",
+    "                print(f\"Sorry, {product_name} is out of stock. Please choose another product.\")\n",
+    "                continue\n",
+    "            \n",
+    "            # Ask for quantity\n",
+    "            while True:\n",
+    "                try:\n",
+    "                    quantity = input(f\"Enter quantity for {product_name}: \")\n",
+    "                    quantity = int(quantity)\n",
+    "                    if quantity < 0:\n",
+    "                        raise ValueError(\"Quantity cannot be negative.\")\n",
+    "                    if quantity > inventory[product_name]:\n",
+    "                        raise ValueError(f\"Only {inventory[product_name]} units of {product_name} available.\")\n",
+    "                    break\n",
+    "                except ValueError as e:\n",
+    "                    print(f\"Invalid input: {e}. Please try again.\")\n",
+    "            \n",
+    "            # Save order and reduce inventory\n",
+    "            orders[product_name] = quantity\n",
+    "            inventory[product_name] -= quantity\n",
+    "            break\n",
+    "\n",
+    "    return orders\n",
+    "\n",
+    "# Example usage\n",
+    "inventory = {\"Apples\": 10, \"Bananas\": 5, \"Oranges\": 8}\n",
+    "customer_orders = get_customer_orders(inventory)\n",
+    "print(\"\\nCustomer Orders:\", customer_orders)\n",
+    "print(\"Updated Inventory:\", inventory)\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "f55ac6e6",
+   "metadata": {},
+   "source": [
+    "---\n",
+    "### STEP 4\n",
+    "4. Test your code by running the program and deliberately entering invalid quantities and product names. \n",
+    "- Make sure the error handling mechanism works as expected."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "e342261e",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Error: Enter a whole number.\n",
+      "Error: Enter a whole number.\n",
+      "Error: Enter a whole number.\n",
+      "Error: Enter a whole number.\n",
+      "Error: Enter a whole number.\n",
+      "Error: Enter a whole number.\n",
+      "Error: 'ddd' not in inventory. Available: ['Chocolate Bar', 'Truffle Box', 'Candy Cane']\n",
+      "Error: 'chocolate bar' not in inventory. Available: ['Chocolate Bar', 'Truffle Box', 'Candy Cane']\n",
+      "Error: 'hehe' not in inventory. Available: ['Chocolate Bar', 'Truffle Box', 'Candy Cane']\n",
+      "Error: 'aa' not in inventory. Available: ['Chocolate Bar', 'Truffle Box', 'Candy Cane']\n"
+     ]
+    }
+   ],
+   "source": [
+    "def initialize_inventory(products):\n",
+    "    \"\"\"Initialize inventory with error handling for quantities\"\"\"\n",
+    "    inventory = {}\n",
+    "    for product in products:\n",
+    "        while True:\n",
+    "            try:\n",
+    "                quantity = int(input(f\"Enter quantity for {product}: \"))\n",
+    "                if quantity < 0:\n",
+    "                    print(\"Error: Quantity cannot be negative.\")\n",
+    "                    continue\n",
+    "                inventory[product] = quantity\n",
+    "                break\n",
+    "            except ValueError:\n",
+    "                print(\"Error: Enter a whole number.\")\n",
+    "    return inventory\n",
+    "\n",
+    "def get_customer_orders(inventory):\n",
+    "    customer_orders = []\n",
+    "    while True:\n",
+    "        try:\n",
+    "            num_orders = int(input(\"Enter number of orders: \"))\n",
+    "            if num_orders < 0:\n",
+    "                print(\"Error: Number of orders cannot be negative.\")\n",
+    "                continue\n",
+    "            break\n",
+    "        except ValueError:\n",
+    "            print(\"Error: Enter a whole number.\")\n",
+    "    \n",
+    "    for _ in range(num_orders):\n",
+    "        while True:\n",
+    "            product = input(\"Enter product name: \").strip()\n",
+    "            if product not in inventory:\n",
+    "                print(f\"Error: '{product}' not in inventory. Available: {list(inventory.keys())}\")\n",
+    "                continue\n",
+    "            if inventory[product] <= 0:\n",
+    "                print(f\"Error: '{product}' out of stock.\")\n",
+    "                continue\n",
+    "            customer_orders.append(product)\n",
+    "            break\n",
+    "    return customer_orders\n",
+    "\n",
+    "def calculate_total_price(products):\n",
+    "    total_price = 0.0\n",
+    "    for product in products:\n",
+    "        while True:\n",
+    "            try:\n",
+    "                price = float(input(f\"Enter price for {product}: $\"))\n",
+    "                if price < 0:\n",
+    "                    print(\"Error: Price cannot be negative.\")\n",
+    "                    continue\n",
+    "                total_price += price\n",
+    "                break\n",
+    "            except ValueError:\n",
+    "                print(\"Error: Enter numeric value.\")\n",
+    "    return total_price\n",
+    "\n",
+    "# Main program\n",
+    "if __name__ == \"__main__\":\n",
+    "    products = [\"Chocolate Bar\", \"Truffle Box\", \"Candy Cane\"]\n",
+    "    inventory = initialize_inventory(products)\n",
+    "    orders = get_customer_orders(inventory)\n",
+    "    total = calculate_total_price(orders)\n",
+    "    print(f\"\\nFinal order: {orders}\")\n",
+    "    print(f\"Total price: ${total:.2f}\")[conversation_history:6]\n"
+   ]
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "base",
    "language": "python",
    "name": "python3"
   },
@@ -90,7 +444,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.13.9"
   }
  },
  "nbformat": 4,