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111 changes: 109 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 +72,118 @@
"\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": 33,
"id": "307d4fb1",
"metadata": {},
"outputs": [],
"source": [
"products = [\"t-shirts\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
"\n",
"def initialize_inventory(products):\n",
" inventory = {}\n",
" for product in products: \n",
" quantity = int(input(f\"Enter quantity for {product}: \"))\n",
" inventory[product] = quantity\n",
" return inventory\n",
"\n",
"def get_customer_order(inventory):\n",
" customers_order = set()\n",
"\n",
" order_input = input(\"Please enter the products you want to order, separated by commas: \")\n",
" orders = [order.strip() for order in order_input.split(\",\")]\n",
"\n",
" for product in orders:\n",
" while True:\n",
" if product not in inventory:\n",
" print(f\"'{product}' does not exist in inventory.\")\n",
" break\n",
" elif inventory[product] <= 0:\n",
" print(f\"'{product}' is out of stock.\")\n",
" break\n",
" else:\n",
" customers_order.add(product)\n",
" break\n",
"\n",
" return customers_order\n",
"\n",
"def calculate_total_price(customers_order):\n",
" total_price = 0\n",
"\n",
" for product in customers_order:\n",
" while True:\n",
" try:\n",
" price = float(input(f\"Please enter the price of {product}: \"))\n",
" if price < 0:\n",
" print(\"Price cannot be negative.\")\n",
" else:\n",
" total_price += price\n",
" break\n",
" except ValueError:\n",
" print(\"Invalid input. Please enter a numeric value.\")\n",
"\n",
" return total_price\n",
"\n",
"def update_inventory(customers_order, inventory):\n",
" for product in customers_order:\n",
" if product in inventory:\n",
" inventory[product] -= 1\n",
" return inventory\n",
"def calculate_order_statistics(customers_order, products):\n",
" total_ordered = len(customers_order)\n",
" percentage_ordered = total_ordered / len(products) * 100\n",
" return total_ordered, percentage_ordered\n",
"\n",
"def print_order_statistics(order_statistics):\n",
" total_ordered, percentage_ordered = order_statistics\n",
" print(f\"total ordered: {total_ordered}\")\n",
" print(f\"percentage ordered: {percentage_ordered: .2f}%\")\n",
"\n",
"\n",
"def print_updated_inventory(inventory):\n",
" for product, quantity in inventory.items():\n",
" print(f\"{product}: {quantity}\")"
]
},
{
"cell_type": "code",
"execution_count": 35,
"id": "74c73c17",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"'mug' is out of stock.\n",
"'hate' does not exist in inventory.\n",
"{'book'}\n",
"Total price: 5.0\n",
"(1, 20.0)\n"
]
}
],
"source": [
"inventory = initialize_inventory(products)\n",
"\n",
"customers_order = get_customer_order(inventory)\n",
"print(customers_order)\n",
"\n",
"total_price = calculate_total_price(customers_order)\n",
"print(\"Total price:\", total_price)\n",
"\n",
"stats = calculate_order_statistics(customers_order, products)\n",
"print(stats)\n",
"\n",
"\n"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
Expand All @@ -90,7 +197,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.14.2"
}
},
"nbformat": 4,
Expand Down