diff --git a/lab-python-functions.ipynb b/lab-python-functions.ipynb
index 44d337b..d42b322 100644
--- a/lab-python-functions.ipynb
+++ b/lab-python-functions.ipynb
@@ -43,11 +43,285 @@
     "\n",
     "\n"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 14,
+   "id": "1fb787e1",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# 1. Set up inventory\n",
+    "def initialize_inventory(prod_list):\n",
+    "    inv = {}\n",
+    "    for p in prod_list:\n",
+    "        # ask for quantity\n",
+    "        qty = input(\"Enter initial quantity for \" + p + \": \")\n",
+    "        try:\n",
+    "            qty = int(qty)\n",
+    "        except:\n",
+    "            qty = 0   # if bad input just 0\n",
+    "        inv[p] = qty\n",
+    "    return inv"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "2d2b23d4",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "{'Apples': 2, 'Bananas': 3, 'Oranges': 4}\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Testing the function 1\n",
+    "test_products = ['Apples', 'Bananas', 'Oranges']\n",
+    "inventory = initialize_inventory(test_products)\n",
+    "print(inventory)\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "id": "63afc896",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# 2. Get customer order(s)\n",
+    "def get_customer_orders():\n",
+    "    orders = set()\n",
+    "    while True:\n",
+    "        prod = input(\"Type product name to order (or done to stop): \").strip()\n",
+    "        if prod.lower() == 'done':\n",
+    "            break\n",
+    "        if prod != \"\":\n",
+    "            orders.add(prod)\n",
+    "    return orders"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 18,
+   "id": "c5849a5f",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "{'péssego', 'anana', 'banana'}\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Testing the function 2\n",
+    "customer_orders = get_customer_orders()\n",
+    "print(customer_orders)\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 25,
+   "id": "5689c4f9",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# 3. Change inventory based on orders\n",
+    "def update_inventory(orders, inv):\n",
+    "    for item in orders:\n",
+    "        if item in inv:\n",
+    "            if inv[item] > 0:\n",
+    "                inv[item] = inv[item] - 1\n",
+    "            else:\n",
+    "                print(\"out of stock:\", item)\n",
+    "        else:\n",
+    "            print(item, \"doesn't exist??\")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 28,
+   "id": "40f83100",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Pineapple doesn't exist??\n",
+      "out of stock: Oranges\n",
+      "{'Apples': 1, 'Bananas': 1, 'Oranges': 0}\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Testing the function 3\n",
+    "inventory = {'Apples': 2, 'Bananas': 1, 'Oranges': 0} \n",
+    "orders = {'Apples', 'Oranges', 'Pineapple'}\n",
+    "update_inventory(orders, inventory)\n",
+    "print(inventory)\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 22,
+   "id": "6bc40b8f",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# 4. Calculate stats\n",
+    "def calculate_order_statistics(orders, prod_list):\n",
+    "    total = len(orders)\n",
+    "    uniq = len(orders.intersection(prod_list))\n",
+    "    if len(prod_list) > 0:\n",
+    "        perc = (uniq / len(prod_list)) * 100\n",
+    "    else:\n",
+    "        perc = 0\n",
+    "    return total, perc"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 30,
+   "id": "174e40d7",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Total orders: 3\n",
+      "Percentage of valid products: 66.67%\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Testing the function 4\n",
+    "orders = {'Apples', 'Bananas', 'Pineapple'}\n",
+    "products = ['Apples', 'Bananas', 'Oranges']\n",
+    "total, perc = calculate_order_statistics(orders, products)\n",
+    "print(f\"Total orders: {total}\")\n",
+    "print(f\"Percentage of valid products: {perc:.2f}%\")\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 10,
+   "id": "6489943c",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# 5. Print stats\n",
+    "def print_order_statistics(stats):\n",
+    "    total, perc = stats\n",
+    "    print(\"\\nOrder stats:\")\n",
+    "    print(\"Total products ordered:\", total)\n",
+    "    print(\"Unique %:\", round(perc, 2), \"%\")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 31,
+   "id": "e91b1704",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "\n",
+      "Order stats:\n",
+      "Total products ordered: 3\n",
+      "Unique %: 66.67 %\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Testing the function 5\n",
+    "stats = (3, 66.67)\n",
+    "print_order_statistics(stats)\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 11,
+   "id": "c3cb6f11",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# 6. Print final inventory\n",
+    "def print_updated_inventory(inv):\n",
+    "    print(\"\\nInventory now:\")\n",
+    "    for k, v in inv.items():\n",
+    "        print(k, \":\", v)\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 32,
+   "id": "68a486a5",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "\n",
+      "Inventory now:\n",
+      "Apples : 4\n",
+      "Bananas : 2\n",
+      "Oranges : 0\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Testing the function 6\n",
+    "inventory = {'Apples': 4, 'Bananas': 2, 'Oranges': 0}\n",
+    "print_updated_inventory(inventory)\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 33,
+   "id": "350b7184",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Péssego doesn't exist??\n",
+      "Pineapple doesn't exist??\n",
+      "Melancia doesn't exist??\n",
+      "\n",
+      "Order stats:\n",
+      "Total products ordered: 3\n",
+      "Unique %: 0.0 %\n",
+      "\n",
+      "Inventory now:\n",
+      "apple : 23\n",
+      "banana : 432345\n",
+      "orange : 543212\n",
+      "mango : 12345\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Execute the main function\n",
+    "if __name__ == \"__main__\":\n",
+    "    main()\n"
+   ]
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "base",
    "language": "python",
    "name": "python3"
   },
@@ -61,7 +335,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.12.7"
   }
  },
  "nbformat": 4,