From dced6ae0e69cc856822497322c0eacc8c61805cf Mon Sep 17 00:00:00 2001
From: Aline Granells <alinegranells@gmail.com>
Date: Fri, 19 Jun 2026 16:24:13 +0100
Subject: [PATCH] Solved lab

---
 lab-python-error-handling.ipynb | 139 +++++++++++++++++++++++++++++++-
 1 file changed, 137 insertions(+), 2 deletions(-)

diff --git a/lab-python-error-handling.ipynb b/lab-python-error-handling.ipynb
index f4c6ef6..4f8180a 100644
--- a/lab-python-error-handling.ipynb
+++ b/lab-python-error-handling.ipynb
@@ -72,11 +72,146 @@
     "\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": 3,
+   "id": "bc6cf873",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "'f' is not available. Please choose from: ['t-shirt', 'mug', 'hat', 'book', 'keychain']\n",
+      "'m' is not available. Please choose from: ['t-shirt', 'mug', 'hat', 'book', 'keychain']\n",
+      "Total Ordered: 2\n",
+      "Percentagem of products ordered: 40.0\n",
+      "t-shirt: 10\n",
+      "mug: 10\n",
+      "hat: 9\n",
+      "book: 9\n",
+      "keychain: 10\n"
+     ]
+    }
+   ],
+   "source": [
+    "products =  [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
+    "\n",
+    "def initialize_inventory(products):\n",
+    "    inventory = {}\n",
+    "    for product in products:\n",
+    "        valid_input = False\n",
+    "        while not valid_input:\n",
+    "            try:\n",
+    "                quantity = int(input(f\"Enter the quantity of {product}s available: \"))\n",
+    "                if quantity >= 0:\n",
+    "                    inventory[product] = quantity\n",
+    "                    valid_input = True\n",
+    "                else:\n",
+    "                    print(\"Quantity cannot be negative. Please enter a valid quantity.\")\n",
+    "            except ValueError:\n",
+    "                print(\"Invalid input. Please enter a valid quantity.\")\n",
+    "    return inventory\n",
+    "\n",
+    "# Previous exercise:\n",
+    "'''\n",
+    "def get_customer_orders():\n",
+    "    customer_orders = set()\n",
+    "\n",
+    "    add_another = \"yes\"\n",
+    "\n",
+    "    while add_another == \"yes\":\n",
+    "        order = input(\"Please input the name of the product: \").lower().strip()\n",
+    "        customer_orders.add(order)\n",
+    "\n",
+    "        add_another = input(\"Do you want another product? (yes/no): \").lower().strip()\n",
+    "\n",
+    "    return customer_orders\n",
+    "'''\n",
+    "# Now with the error handling\n",
+    "\n",
+    "def get_customer_orders():\n",
+    "    customer_orders = set()\n",
+    "\n",
+    "    add_another = \"yes\"\n",
+    "\n",
+    "    while add_another == \"yes\":\n",
+    "        try:\n",
+    "            order = input(\"Please input the name of the product: \").lower().strip()\n",
+    "\n",
+    "            if order not in products:\n",
+    "                print(f\"'{order}' is not available. Please choose from: {products}\")\n",
+    "                continue\n",
+    "\n",
+    "            customer_orders.add(order)\n",
+    "\n",
+    "            while True:\n",
+    "                add_another = input(\"Do you want another product? (yes/no): \").lower().strip()\n",
+    "\n",
+    "                if add_another in [\"yes\", \"no\"]:\n",
+    "                    break\n",
+    "                else:\n",
+    "                    print(\"Please type 'yes' or 'no' only.\")\n",
+    "\n",
+    "        except ValueError as e:\n",
+    "            print(f\"Error: {e}\")\n",
+    "\n",
+    "    return customer_orders\n",
+    "\n",
+    "\n",
+    "\n",
+    "\n",
+    "\n",
+    "def update_inventory(customer_orders, inventory):\n",
+    "    return {\n",
+    "        product: quantity - 1 if product in customer_orders else quantity\n",
+    "        for product, quantity in inventory.items()\n",
+    "    }\n",
+    "\n",
+    "def calculate_order_statistics(customer_orders, products):\n",
+    "    total_order = len(customer_orders)\n",
+    "    rate = (total_order / len(products)) * 100\n",
+    "\n",
+    "    return total_order, rate\n",
+    "\n",
+    "def print_order_statistics(order_statistics):\n",
+    "    total_order, rate = order_statistics\n",
+    "    \n",
+    "    print(f\"Total Ordered: {total_order}\")\n",
+    "    print(f\"Percentagem of products ordered: {rate}\")\n",
+    "\n",
+    "\n",
+    "def print_updated_inventory(inventory):\n",
+    "    [print(f\"{product}: {quantity}\") for product, quantity in inventory.items()]\n",
+    "\n",
+    "\n",
+    "\n",
+    "inventory = initialize_inventory(products)\n",
+    "\n",
+    "customer_orders = get_customer_orders()\n",
+    "\n",
+    "inventory = update_inventory(customer_orders, inventory)\n",
+    "\n",
+    "order_statistics = calculate_order_statistics(customer_orders, products)\n",
+    "\n",
+    "print_order_statistics(order_statistics)\n",
+    "\n",
+    "print_updated_inventory(inventory)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "4f74e438",
+   "metadata": {},
+   "outputs": [],
+   "source": []
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "Python 3",
    "language": "python",
    "name": "python3"
   },
@@ -90,7 +225,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.14.5"
   }
  },
  "nbformat": 4,