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198 changes: 196 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 +72,205 @@
"\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": "4b213ad5",
"metadata": {},
"outputs": [],
"source": [
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
"\n",
"\n",
"def initialize_inventory(products):\n",
" inventory = {}\n",
"\n",
" for product in products:\n",
" valid_input = False\n",
"\n",
" while not valid_input:\n",
" try:\n",
" quantity = int(input(f\"Enter the quantity of {product}s available: \"))\n",
" if quantity < 0:\n",
" print(\"Quantity cannot be negative. Please enter a valid quantity.\")\n",
" else:\n",
" inventory[product] = quantity\n",
" valid_input = True\n",
" except ValueError:\n",
" print(\"Invalid input. Please enter a whole number.\")\n",
"\n",
" return inventory"
]
},
{
"cell_type": "code",
"execution_count": 4,
"id": "46964589",
"metadata": {},
"outputs": [],
"source": [
"def get_customer_orders(inventory):\n",
" customer_orders = set()\n",
"\n",
" valid_input = False\n",
" while not valid_input:\n",
" try:\n",
" num_orders = int(input(\"How many different products does the customer want to order? \"))\n",
" if num_orders < 0:\n",
" print(\"Number of orders cannot be negative. Please enter a valid number.\")\n",
" else:\n",
" valid_input = True\n",
" except ValueError:\n",
" print(\"Invalid input. Please enter a whole number.\")\n",
"\n",
" for i in range(num_orders):\n",
" valid_product = False\n",
"\n",
" while not valid_product:\n",
" product = input(f\"Enter product {i + 1}: \").lower()\n",
"\n",
" if product not in inventory:\n",
" print(\"This product does not exist. Please enter a valid product.\")\n",
" elif inventory[product] <= 0:\n",
" print(\"This product is out of stock. Please choose another product.\")\n",
" else:\n",
" customer_orders.add(product)\n",
" valid_product = True\n",
"\n",
" return customer_orders\n"
]
},
{
"cell_type": "code",
"execution_count": 5,
"id": "c1e466ef",
"metadata": {},
"outputs": [],
"source": [
"def update_inventory(customer_orders, inventory):\n",
" for product in customer_orders:\n",
" inventory[product] -= 1"
]
},
{
"cell_type": "code",
"execution_count": 6,
"id": "ebf1c00a",
"metadata": {},
"outputs": [],
"source": [
"def calculate_order_statistics(customer_orders, products):\n",
" total_products_ordered = len(customer_orders)\n",
" percentage_products_ordered = (total_products_ordered / len(products)) * 100\n",
"\n",
" order_statistics = (total_products_ordered, percentage_products_ordered)\n",
"\n",
" return order_statistics\n"
]
},
{
"cell_type": "code",
"execution_count": 7,
"id": "1927d4c7",
"metadata": {},
"outputs": [],
"source": [
"def print_order_statistics(order_statistics):\n",
" print(\"Order Statistics\")\n",
" print(f\"Total Products Ordered: {order_statistics[0]}\")\n",
" print(f\"Percentage of Products Ordered: {order_statistics[1]}%\")\n"
]
},
{
"cell_type": "code",
"execution_count": 8,
"id": "b69982b9",
"metadata": {},
"outputs": [],
"source": [
"def print_updated_inventory(inventory):\n",
" print(\"Updated Inventory\")\n",
" for product, quantity in inventory.items():\n",
" print(f\"{product}: {quantity}\")\n"
]
},
{
"cell_type": "code",
"execution_count": 9,
"id": "4867c682",
"metadata": {},
"outputs": [],
"source": [
"def calculate_total_price(customer_orders):\n",
" total_price = 0\n",
"\n",
" for product in customer_orders:\n",
" valid_input = False\n",
"\n",
" while not valid_input:\n",
" try:\n",
" price = float(input(f\"Enter the price for {product}: \"))\n",
" if price < 0:\n",
" print(\"Price cannot be negative. Please enter a valid price.\")\n",
" else:\n",
" total_price += price\n",
" valid_input = True\n",
" except ValueError:\n",
" print(\"Invalid input. Please enter a valid number.\")\n",
"\n",
" return total_price\n"
]
},
{
"cell_type": "code",
"execution_count": 11,
"id": "5f047dad",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"This product does not exist. Please enter a valid product.\n",
"This product does not exist. Please enter a valid product.\n",
"Order Statistics\n",
"Total Products Ordered: 3\n",
"Percentage of Products Ordered: 60.0%\n",
"Updated Inventory\n",
"t-shirt: 100\n",
"mug: 49\n",
"hat: 19\n",
"book: 5\n",
"keychain: 1\n",
"Total Price: 130.0\n"
]
}
],
"source": [
"inventory = initialize_inventory(products)\n",
"customer_orders = get_customer_orders(inventory)\n",
"update_inventory(customer_orders, inventory)\n",
"order_statistics = calculate_order_statistics(customer_orders, products)\n",
"print_order_statistics(order_statistics)\n",
"print_updated_inventory(inventory)\n",
"\n",
"total_price = calculate_total_price(customer_orders)\n",
"print(f\"Total Price: {total_price}\")"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "58f2feb1",
"metadata": {},
"outputs": [],
"source": []
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"display_name": "base",
"language": "python",
"name": "python3"
},
Expand All @@ -90,7 +284,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.12.7"
}
},
"nbformat": 4,
Expand Down