From ce52672b3167751c119a8790295fc9e2fcc5818b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ant=C3=B3nio=20Gomes?= <antmgomes@outlook.com>
Date: Fri, 10 Oct 2025 18:47:44 +0200
Subject: [PATCH] Done with the Functions Lab

---
 lab-python-functions.ipynb | 92 +++++++++++++++++++++++++++++++++++++-
 1 file changed, 90 insertions(+), 2 deletions(-)

diff --git a/lab-python-functions.ipynb b/lab-python-functions.ipynb
index 44d337b..4a4b27c 100644
--- a/lab-python-functions.ipynb
+++ b/lab-python-functions.ipynb
@@ -43,11 +43,99 @@
     "\n",
     "\n"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "id": "559c9293",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Total unique products ordered: 1\n",
+      "Percentage of products ordered: 20.0 %\n",
+      "t-shirt 12\n",
+      "mug 11\n",
+      "hat 12\n",
+      "book 12\n",
+      "keychain 12\n"
+     ]
+    }
+   ],
+   "source": [
+    "products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
+    "\n",
+    "def initialize_inventory (products):\n",
+    "#I had the empty dictionary as a global variable, but it is not the best way to do it,\n",
+    "#it should be inside the function, locally!\n",
+    "    inventory = {}\n",
+    "    for product in products:\n",
+    "        quantity = int(input(\"Insert Quantity of: \" + product + \"s\"))\n",
+    "        inventory[product] = quantity\n",
+    "#I had the return inside the loop. Return immediately stops the function, so that means that \n",
+    "#if it is inside the loop, as soon as the user gives the first input, the code stops!\n",
+    "    return inventory\n",
+    "\n",
+    "inventory = initialize_inventory(products)\n",
+    "\n",
+    "def get_customer_orders():\n",
+    "#Once again, I had the set outside of the function\n",
+    "    customer_orders = set()\n",
+    "    ask_customer = \"yes\"\n",
+    "    \n",
+    "    while ask_customer == \"yes\":\n",
+    "        order = input(\"Select a product from the products list: \")\n",
+    "        if order in products:\n",
+    "            customer_orders.add(order)\n",
+    "        else:\n",
+    "            print(\"Invalid product. Please choose one from the list.\")\n",
+    "        ask_customer = input(\"Do you want to order another product? (yes/no): \").lower()\n",
+    "    \n",
+    "    return customer_orders\n",
+    "\n",
+    "customer_orders = get_customer_orders()\n",
+    "\n",
+    "#two parameters but only return one value because \n",
+    "#customer_orders = instructions.\n",
+    "#inventory = the thing being updated.\n",
+    "#You return only the thing that changed, which is inventory.\n",
+    "def update_inventory(customer_orders, inventory):\n",
+    "    for item in customer_orders:\n",
+    "        inventory[item] -= 1\n",
+    "\n",
+    "    return inventory\n",
+    "\n",
+    "inventory = update_inventory(customer_orders, inventory)\n",
+    "\n",
+    "def calculate_order_statistics(customer_orders, products):\n",
+    "    total_products_ordered = len(customer_orders)\n",
+    "    total_available_products = len(products)\n",
+    "    percentage_ordered = (total_products_ordered / total_available_products) * 100\n",
+    "\n",
+    "    return total_products_ordered, percentage_ordered\n",
+    "\n",
+    "order_statistics = calculate_order_statistics(customer_orders, products)\n",
+    "\n",
+    "def print_order_statistics(order_statistics):\n",
+    "    total_products_ordered, percentage_ordered = order_statistics\n",
+    "    print(\"Total unique products ordered:\", total_products_ordered)\n",
+    "    print(\"Percentage of products ordered:\", percentage_ordered, \"%\")\n",
+    "\n",
+    "print_order_statistics(order_statistics)\n",
+    "\n",
+    "def print_updated_inventory(inventory):\n",
+    "    for product, quantity in inventory.items():\n",
+    "        print(product, quantity)\n",
+    "\n",
+    "print_updated_inventory(inventory)"
+   ]
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "base",
    "language": "python",
    "name": "python3"
   },
@@ -61,7 +149,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.13.5"
   }
  },
  "nbformat": 4,