From 93913a6980b6e9aba570f8db6109f2ba6c0016ac Mon Sep 17 00:00:00 2001 From: Teresa Mendes Coelho Date: Mon, 22 Jun 2026 01:29:43 +0100 Subject: [PATCH] Solved error handling lab --- lab-python-error-handling.ipynb | 159 +++++++++++++++++++++++++++++++- 1 file changed, 157 insertions(+), 2 deletions(-) diff --git a/lab-python-error-handling.ipynb b/lab-python-error-handling.ipynb index f4c6ef6..e30078d 100644 --- a/lab-python-error-handling.ipynb +++ b/lab-python-error-handling.ipynb @@ -72,11 +72,166 @@ "\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": 1, + "id": "565e0de5", + "metadata": {}, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "\n", + "Order Statistics:\n", + "Total Products Ordered: 2\n", + "Percentage of Unique Products Ordered: 40.0\n", + "\n", + "Updated Inventory:\n", + "t-shirt: 5\n", + "mug: 4\n", + "hat: 2\n", + "book: 2\n", + "Total Price: 15.0\n" + ] + } + ], + "source": [ + "products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n", + "\n", + "\n", + "def initialize_inventory(products):\n", + " inventory = {}\n", + "\n", + " for product in products:\n", + " while True:\n", + " try:\n", + " quantity = int(input(f\"Enter the quantity of {product}s available: \"))\n", + "\n", + " if quantity < 0:\n", + " raise ValueError(\"Quantity cannot be negative.\")\n", + "\n", + " inventory[product] = quantity\n", + " break\n", + "\n", + " except ValueError as error:\n", + " print(f\"Invalid quantity: {error}\")\n", + "\n", + " return inventory\n", + "\n", + "\n", + "def get_customer_orders(inventory):\n", + " customer_orders = set()\n", + "\n", + " while True:\n", + " try:\n", + " number_of_orders = int(input(\"Enter the number of customer orders: \"))\n", + "\n", + " if number_of_orders < 0:\n", + " raise ValueError(\"Number of orders cannot be negative.\")\n", + "\n", + " break\n", + "\n", + " except ValueError as error:\n", + " print(f\"Invalid number of orders: {error}\")\n", + "\n", + " for _ in range(number_of_orders):\n", + " while True:\n", + " try:\n", + " order = input(\n", + " \"Enter the name of a product that a customer wants to order: \"\n", + " )\n", + "\n", + " if order not in inventory:\n", + " raise ValueError(\"Product does not exist.\")\n", + "\n", + " if inventory[order] <= 0:\n", + " raise ValueError(\"Product is out of stock.\")\n", + "\n", + " customer_orders.add(order)\n", + " break\n", + "\n", + " except ValueError as error:\n", + " print(f\"Invalid product: {error}\")\n", + "\n", + " return customer_orders\n", + "\n", + "\n", + "def calculate_order_statistics(customer_orders, products):\n", + " total_products_ordered = len(customer_orders)\n", + " percentage_ordered = (total_products_ordered / len(products)) * 100\n", + "\n", + " return total_products_ordered, percentage_ordered\n", + "\n", + "\n", + "def update_inventory(inventory, customer_orders):\n", + " for product in customer_orders:\n", + " inventory[product] -= 1\n", + "\n", + " inventory = {\n", + " product: quantity\n", + " for product, quantity in inventory.items()\n", + " if quantity > 0\n", + " }\n", + "\n", + " return inventory\n", + "\n", + "\n", + "def calculate_total_price(customer_orders):\n", + " total_price = 0\n", + "\n", + " for product in customer_orders:\n", + " while True:\n", + " try:\n", + " price = float(input(f\"Enter the price of {product}: \"))\n", + "\n", + " if price < 0:\n", + " raise ValueError(\"Price cannot be negative.\")\n", + "\n", + " total_price += price\n", + " break\n", + "\n", + " except ValueError as error:\n", + " print(f\"Invalid price: {error}\")\n", + "\n", + " return total_price\n", + "\n", + "\n", + "def print_order_statistics(order_statistics):\n", + " print(\"\\nOrder Statistics:\")\n", + " print(f\"Total Products Ordered: {order_statistics[0]}\")\n", + " print(f\"Percentage of Unique Products Ordered: {order_statistics[1]}\")\n", + "\n", + "\n", + "def print_updated_inventory(inventory):\n", + " print(\"\\nUpdated Inventory:\")\n", + "\n", + " for product, quantity in inventory.items():\n", + " print(f\"{product}: {quantity}\")\n", + "\n", + "\n", + "inventory = initialize_inventory(products)\n", + "\n", + "customer_orders = get_customer_orders(inventory)\n", + "\n", + "order_statistics = calculate_order_statistics(customer_orders, products)\n", + "\n", + "inventory = update_inventory(inventory, customer_orders)\n", + "\n", + "total_price = calculate_total_price(customer_orders)\n", + "\n", + "print_order_statistics(order_statistics)\n", + "\n", + "print_updated_inventory(inventory)\n", + "\n", + "print(f\"Total Price: {total_price}\")" + ] } ], "metadata": { "kernelspec": { - "display_name": "Python 3 (ipykernel)", + "display_name": "Python 3", "language": "python", "name": "python3" }, @@ -90,7 +245,7 @@ "name": "python", "nbconvert_exporter": "python", "pygments_lexer": "ipython3", - "version": "3.9.13" + "version": "3.14.6" } }, "nbformat": 4,