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Solved lab #679

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307 changes: 304 additions & 3 deletions lab-python-error-handling.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -72,13 +72,314 @@
"\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": 30,
"id": "5caa19b0-22c2-401f-a1dc-00507a389a5c",
"metadata": {},
"outputs": [],
"source": [
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]"
]
},
{
"cell_type": "code",
"execution_count": 42,
"id": "a6e619b3-0010-4474-8085-4d143ecd3e7d",
"metadata": {},
"outputs": [],
"source": [
"def initialize_inventory(products):\n",
" inventory = {}\n",
" for product in products:\n",
" valid_input = False\n",
" while not valid_input: # valid_input FALSE\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",
" print(\"\")\n",
" return inventory"
]
},
{
"cell_type": "code",
"execution_count": 43,
"id": "dba8d31d-5c73-4827-904b-54568e6840fb",
"metadata": {},
"outputs": [],
"source": [
"def get_customer_orders(inventory):\n",
" customer_orders = set()\n",
" valid_input = False\n",
" while not valid_input:\n",
" try:\n",
" orders = int(input(\"Enter the number of customer orders: \"))\n",
" if orders >= 0:\n",
" valid_input = True\n",
" else:\n",
" print(\"The number of orders cannot be negative. Please enter a valid quantity.\")\n",
" except ValueError:\n",
" print(\"Invalid input. Please enter a valid quantity.\")\n",
" \n",
" for _ in range(orders):\n",
" valid_product = False\n",
" while not valid_product:\n",
" try:\n",
" ordered_product = input(\"Enter the name of a product that a customer wants to order: \").lower()\n",
" if ordered_product not in inventory:\n",
" print(f\"{ordered_product} is an invalid product.\")\n",
" elif inventory[ordered_product] == 0:\n",
" print(f\"{ordered_product} doesn't have stock available.\")\n",
" else:\n",
" customer_orders.add(ordered_product)\n",
" valid_product = True\n",
" \n",
" \n",
" except:\n",
" print(\"Invalid input. Please enter a valid quantity.\")\n",
"\n",
" return customer_orders\n"
]
},
{
"cell_type": "code",
"execution_count": 44,
"id": "28d1690f-e97f-4fd5-8d6b-5a45d2c307f6",
"metadata": {},
"outputs": [],
"source": [
"def calculate_total_price (customer_orders):\n",
" prices = []\n",
" for product in customer_orders:\n",
" valid_input = False\n",
" while not valid_input:\n",
" try: \n",
" price = float(input(f\"Enter the price of {product}: \"))\n",
" if price >= 0:\n",
" prices.append(price)\n",
" valid_input = True\n",
" else:\n",
" print(\"Price cannot be negative. Please enter a valid price.\")\n",
" except ValueError:\n",
" print(\"Invalid input. Please enter a valid price.\")\n",
" return sum(prices)"
]
},
{
"cell_type": "code",
"execution_count": 45,
"id": "7d26a5a3-9f34-4048-a2b8-365e25943f1b",
"metadata": {},
"outputs": [],
"source": [
"def update_inventory(customer_orders, inventory):\n",
" for product in customer_orders:\n",
" inventory[product] -= 1\n",
"\n",
" inventory = {product : inventory[product] for product in inventory if inventory[product] != 0}\n",
" \n",
" return inventory"
]
},
{
"cell_type": "code",
"execution_count": 46,
"id": "709df41e-2373-4532-810d-4dff02682048",
"metadata": {},
"outputs": [],
"source": [
"def calculate_order_statistics (customer_orders, products):\n",
" n_products=len(customer_orders)\n",
" percentage=n_products/len(products) * 100\n",
" return n_products, percentage"
]
},
{
"cell_type": "code",
"execution_count": 47,
"id": "2b6eaffc-5579-4159-a806-612726b58968",
"metadata": {},
"outputs": [],
"source": [
"def print_order_statistics(order_statistics):\n",
" print(\" \")\n",
" print(\"Order Statistics:\")\n",
" print(f\"Total products ordered: {order_statistics[0]}\")\n",
" print(f\"Percentage of unique products ordered: {order_statistics[1]}%\")\n",
"\n",
"def print_updated_inventory(inventory):\n",
" print(\"\")\n",
" print(\"Updated inventory: \")\n",
" for product in inventory:\n",
" print(f\"{product}: {inventory[product]}\")\n",
"\n",
"def print_total_price(total_price):\n",
" print(\"\")\n",
" print (\"Total price:\", total_price)"
]
},
{
"cell_type": "code",
"execution_count": 48,
"id": "265a8859-9d4c-437a-9676-44f4f7d8bea3",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the quantity of t-shirts available: \n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Invalid input. Please enter a valid quantity.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the quantity of t-shirts available: 5\n",
"Enter the quantity of mugs available: 4\n",
"Enter the quantity of hats available: 3\n",
"Enter the quantity of books available: 2\n",
"Enter the quantity of keychains available: 1\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the number of customer orders: 3\n",
"Enter the name of a product that a customer wants to order: book\n",
"Enter the name of a product that a customer wants to order: bok\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"bok is an invalid product.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the name of a product that a customer wants to order: mug\n",
"Enter the name of a product that a customer wants to order: keychain\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
" \n",
"Order Statistics:\n",
"Total products ordered: 3\n",
"Percentage of unique products ordered: 60.0%\n",
"\n",
"Updated inventory: \n",
"t-shirt: 5\n",
"mug: 3\n",
"hat: 3\n",
"book: 1\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the price of mug: 5\n",
"Enter the price of book: 3\n",
"Enter the price of keychain: 1\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"\n",
"Total price: 9.0\n"
]
}
],
"source": [
"inventory=initialize_inventory(products)\n",
"customer_orders=get_customer_orders(inventory)\n",
"\n",
"inventory=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_order_price=calculate_total_price(customer_orders)\n",
"print_total_price(total_order_price)"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "aa50215e-b5f4-4156-bf4c-d866419f744d",
"metadata": {},
"outputs": [],
"source": []
},
{
"cell_type": "code",
"execution_count": null,
"id": "35eb117f-8089-4012-82a1-b345a91b1c9a",
"metadata": {},
"outputs": [],
"source": []
},
{
"cell_type": "code",
"execution_count": null,
"id": "a8a0ef3c-7ea8-41e3-94a4-7857fdefd005",
"metadata": {},
"outputs": [],
"source": []
},
{
"cell_type": "code",
"execution_count": null,
"id": "1a60bfbb-bd4e-4280-a231-b3aaf6ca1947",
"metadata": {},
"outputs": [],
"source": []
},
{
"cell_type": "code",
"execution_count": null,
"id": "56013701-cb9b-450f-ba93-6908c2c00f65",
"metadata": {},
"outputs": [],
"source": []
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"display_name": "Python [conda env:base] *",
"language": "python",
"name": "python3"
"name": "conda-base-py"
},
"language_info": {
"codemirror_mode": {
Expand All @@ -90,7 +391,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.13.9"
}
},
"nbformat": 4,
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