diff --git a/lab-python-functions.ipynb b/lab-python-functions.ipynb
index 44d337b..48c13ba 100644
--- a/lab-python-functions.ipynb
+++ b/lab-python-functions.ipynb
@@ -43,13 +43,337 @@
     "\n",
     "\n"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "id": "c2be4124-9ebb-41b9-8d1b-ea0f4f46c282",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Enter the qty t-shirt:,  20\n",
+      "Enter the qty mug:,  34\n",
+      "Enter the qty hat:,  16\n",
+      "Enter the qty book:,  36\n",
+      "Enter the qty keychain:,  36\n"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The final list of inventory: {'t-shirt': 20, 'mug': 34, 'hat': 16, 'book': 36, 'keychain': 36}\n"
+     ]
+    }
+   ],
+   "source": [
+    "products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"] #Define a function named initialize_inventory that takes products as a parameter.\n",
+    "def initialize_inventory(products: list[str]):\n",
+    "    inventory = {}\n",
+    "    for product in products:\n",
+    "        quantity = int(input(f\"Enter the qty {product}:, \"))\n",
+    "        inventory[product] = quantity\n",
+    "    return inventory\n",
+    "\n",
+    "inventory = initialize_inventory(products)\n",
+    "print(\"The final list of inventory:\", inventory)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 15,
+   "id": "bce1b898-ba91-442a-a543-fa727fc1718f",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The list of products ['t-shirt', 'mug', 'hat', 'book', 'keychain']\n"
+     ]
+    },
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Enter the item to order:,  mug\n"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "mug added to your order\n",
+      "The list of products ['t-shirt', 'mug', 'hat', 'book', 'keychain']\n"
+     ]
+    },
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Enter the item to order:,  hat\n"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "hat added to your order\n",
+      "The list of products ['t-shirt', 'mug', 'hat', 'book', 'keychain']\n"
+     ]
+    },
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Enter the item to order:,  0\n"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The final order: {'hat', 'mug'}\n"
+     ]
+    }
+   ],
+   "source": [
+    "def get_customer_orders():             #Define a function named get_customer_orders that takes no parameters\n",
+    "    customer_orders = set()\n",
+    "    while True:\n",
+    "        print(\"The list of products\", products)\n",
+    "        product = input(f\"Enter the item to order:, \").lower()\n",
+    "        if product == \"0\":\n",
+    "            break\n",
+    "        elif product in products:\n",
+    "            customer_orders.add(product)\n",
+    "            print(f\"{product} added to your order\")\n",
+    "        else:\n",
+    "            print(\"Invalid product\")\n",
+    "    return customer_orders\n",
+    "\n",
+    "orders = get_customer_orders()\n",
+    "print(\"The final order:\", orders)        "
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 18,
+   "id": "fe0f8c28-602e-40bd-a649-a2e4ccbb4d1d",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The updated inventory is: {'t-shirt': 20, 'mug': 33, 'hat': 15, 'book': 36, 'keychain': 36}\n"
+     ]
+    }
+   ],
+   "source": [
+    "def update_inventory(customer_orders, inventory):     #function to update inventory\n",
+    "    for product in customer_orders:\n",
+    "        if product in inventory and inventory[product] > 0:\n",
+    "            inventory[product] -= 1\n",
+    "    return inventory\n",
+    "\n",
+    "print(\"The updated inventory is:\",update_inventory(orders, inventory))         "
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 23,
+   "id": "c32f1b58-2328-43da-ac74-b97752e7805b",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The total number of products ordered are: 2\n",
+      "The % of products ordered are: 40.0 %\n"
+     ]
+    }
+   ],
+   "source": [
+    "def calculate_order_statistics(customer_orders, inventory):     #order statistics\n",
+    "    total_products_ordered = len(customer_orders)         #total product ordered\n",
+    "    percentage_total_products_ordered = (total_products_ordered / len(products)) * 100 #percentage of total products ordered\n",
+    "    return total_products_ordered, percentage_total_products_ordered\n",
+    "total, percentage= calculate_order_statistics(orders, inventory)\n",
+    "print(\"The total number of products ordered are:\",total)\n",
+    "print(\"The % of products ordered are:\", percentage, \"%\")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 31,
+   "id": "12a66805-2958-4f9c-864d-55bae314445e",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The total number of products ordered are: 2\n",
+      "The % of products ordered are: 40.0 %\n"
+     ]
+    }
+   ],
+   "source": [
+    "def print_order_statistics(order_statistics):     #printing order stastics\n",
+    "    total_products_ordered, percentage_total_products_ordered = order_statistics\n",
+    "    print(\"The total number of products ordered are:\",total_products_ordered)\n",
+    "    print(\"The % of products ordered are:\", percentage_total_products_ordered, \"%\")\n",
+    "order_statistics = calculate_order_statistics(orders, inventory)\n",
+    "print_order_statistics(order_statistics)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 32,
+   "id": "c888f863-37d2-42e1-b5eb-7f56e9ab96be",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Updated Inventory:\n",
+      "t-shirt: 20\n",
+      "mug: 33\n",
+      "hat: 15\n",
+      "book: 36\n",
+      "keychain: 36\n"
+     ]
+    }
+   ],
+   "source": [
+    "def print_updated_inventory(inventory):          #printing updated inventory\n",
+    "    print(\"Updated Inventory:\")\n",
+    "    for product, quantity in inventory.items():\n",
+    "        print(f\"{product}: {quantity}\")\n",
+    "\n",
+    "print_updated_inventory(inventory)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 44,
+   "id": "6631bcb7-5ff2-43c6-8eb2-3186eadeb831",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Enter the qty t-shirt:,  50\n",
+      "Enter the qty mug:,  50\n",
+      "Enter the qty hat:,  50\n",
+      "Enter the qty book:,  50\n",
+      "Enter the qty keychain:,  50\n"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The list of products ['t-shirt', 'mug', 'hat', 'book', 'keychain']\n"
+     ]
+    },
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Enter the item to order:,  mug\n"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "mug added to your order\n",
+      "The list of products ['t-shirt', 'mug', 'hat', 'book', 'keychain']\n"
+     ]
+    },
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Enter the item to order:,  hat\n"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "hat added to your order\n",
+      "The list of products ['t-shirt', 'mug', 'hat', 'book', 'keychain']\n"
+     ]
+    },
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Enter the item to order:,  book\n"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "book added to your order\n",
+      "The list of products ['t-shirt', 'mug', 'hat', 'book', 'keychain']\n"
+     ]
+    },
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Enter the item to order:,  0\n"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The total number of products ordered are: 3\n",
+      "The % of products ordered are: 60.0 %\n",
+      "Updated Inventory:\n",
+      "t-shirt: 50\n",
+      "mug: 49\n",
+      "hat: 49\n",
+      "book: 49\n",
+      "keychain: 50\n"
+     ]
+    }
+   ],
+   "source": [
+    "inventory = initialize_inventory(products)\n",
+    "orders = get_customer_orders()\n",
+    "update_inventory(orders, inventory)\n",
+    "calculate_order_statistics(orders, inventory)\n",
+    "print_order_statistics(order_statistics)\n",
+    "print_updated_inventory(inventory)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "a242da4d-806b-4047-be7a-0ba3be314890",
+   "metadata": {},
+   "outputs": [],
+   "source": []
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "Python [conda env:base] *",
    "language": "python",
-   "name": "python3"
+   "name": "conda-base-py"
   },
   "language_info": {
    "codemirror_mode": {
@@ -61,7 +385,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.13.5"
   }
  },
  "nbformat": 4,