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104 changes: 102 additions & 2 deletions lab-python-error-handling.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -72,11 +72,111 @@
"\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": null,
"id": "2d53dbe9",
"metadata": {},
"outputs": [],
"source": [
"def initialize_inventory(products):\n",
" inventory = {}\n",
" for product in products:\n",
" while True:\n",
" try:\n",
" quantity = int(input(f\"Enter the quantity of {product}s available: \"))\n",
" if quantity < 0:\n",
" raise ValueError(\"Quantity cannot be negative.\")\n",
" inventory[product] = quantity\n",
" break\n",
" except ValueError as e:\n",
" print(f\"Error: {e}\")\n",
" return inventory\n",
"\n",
"def get_customer_orders(inventory):\n",
" customer_orders = set()\n",
" while True:\n",
" try:\n",
" num_orders = int(input(\"\\nEnter the number of customer orders: \"))\n",
" if num_orders < 0:\n",
" raise ValueError(\"Number of orders cannot be negative.\")\n",
" break\n",
" except ValueError as e:\n",
" print(f\"Error: {e}\")\n",
"\n",
" for _ in range(num_orders):\n",
" while True:\n",
" product = input(\"Enter the name of a product that a customer wants to order: \").strip().lower()\n",
" if product not in inventory:\n",
" print(f\"'{product}' is not in inventory. Try again.\")\n",
" elif inventory[product] == 0:\n",
" print(f\"'{product}' is out of stock. Try again.\")\n",
" else:\n",
" customer_orders.add(product)\n",
" break\n",
" return customer_orders\n",
"\n",
"def update_inventory(customer_orders, inventory):\n",
" for product in customer_orders:\n",
" if product in inventory and inventory[product] > 0:\n",
" inventory[product] -= 1\n",
" elif product in inventory:\n",
" print(f\"'{product}' is out of stock.\")\n",
" else:\n",
" print(f\"'{product}' is not available in the inventory.\")\n",
"\n",
" inventory = {k: v for k, v in inventory.items() if v > 0}\n",
" return inventory\n",
"\n",
"def calculate_order_statistics(customer_orders, products):\n",
" total_ordered = len(customer_orders)\n",
" unique_ordered = len([item for item in customer_orders if item in products])\n",
" percentage_unique = (unique_ordered / len(products)) * 100\n",
" return total_ordered, percentage_unique\n",
"\n",
"def print_order_statistics(order_stats):\n",
" total_ordered, percentage_unique = order_stats\n",
" print(\"\\nOrder Statistics:\")\n",
" print(f\"Total Products Ordered: {total_ordered}\")\n",
" print(f\"Percentage of Unique Products Ordered: {percentage_unique:.1f}\")\n",
"\n",
"def print_updated_inventory(inventory):\n",
" print(\"\\nUpdated Inventory:\")\n",
" for product, quantity in inventory.items():\n",
" print(f\"{product}: {quantity}\")\n",
"\n",
"def calculate_total_price(customer_orders):\n",
" prices = {}\n",
" for product in customer_orders:\n",
" while True:\n",
" try:\n",
" price = float(input(f\"Enter the price of {product}: \"))\n",
" if price < 0:\n",
" raise ValueError(\"Price cannot be negative.\")\n",
" prices[product] = price\n",
" break\n",
" except ValueError as e:\n",
" print(f\"Error: {e}\")\n",
" return sum(prices.values())\n",
"\n",
"# --------- MAIN PROGRAM ---------\n",
"products = ['t-shirt', 'mug', 'hat', 'book', 'keychain']\n",
"\n",
"inventory = initialize_inventory(products)\n",
"customer_orders = get_customer_orders(inventory)\n",
"inventory = update_inventory(customer_orders, inventory)\n",
"order_stats = calculate_order_statistics(customer_orders, products)\n",
"print_order_statistics(order_stats)\n",
"print_updated_inventory(inventory)\n",
"total_price = calculate_total_price(customer_orders)\n",
"print(f\"\\nTotal Price: {total_price:.2f}\")\n"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"display_name": "base",
"language": "python",
"name": "python3"
},
Expand All @@ -90,7 +190,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.12.7"
}
},
"nbformat": 4,
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