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258 changes: 257 additions & 1 deletion lab-python-error-handling.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -72,6 +72,262 @@
"\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": "f4ef1ac0-1b48-46a0-a6f2-d1a6402829fc",
"metadata": {},
"outputs": [],
"source": [
"products = ['t-shirt', 'mug', 'hat', 'book', 'keychain']\n"
]
},
{
"cell_type": "code",
"execution_count": 2,
"id": "e3a34eb1-f139-4b00-aafd-ce720e527f2c",
"metadata": {},
"outputs": [],
"source": [
"def initialize_inventory(products):\n",
" inventory = {}\n",
" for product in products:\n",
" valid_input = False\n",
" while not valid_input:\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",
" return inventory"
]
},
{
"cell_type": "code",
"execution_count": 3,
"id": "f828ae3b-594e-4a06-9985-549f16d57577",
"metadata": {},
"outputs": [],
"source": [
"#2.\n",
"def calculate_total_price(customer_orders):\n",
" total_price = 0\n",
"\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 for {product}: \"))\n",
" if price >= 0:\n",
" total_price += 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",
"\n",
" return total_price\n"
]
},
{
"cell_type": "code",
"execution_count": 4,
"id": "362fc934-4d72-4dea-8129-a4cf5920958e",
"metadata": {},
"outputs": [],
"source": [
"#3.\n",
"def get_customer_orders(inventory):\n",
" customer_orders = set()\n",
"\n",
" # Number of orders\n",
" valid_input = False\n",
" while not valid_input:\n",
" try:\n",
" number_orders = int(input(\"Enter the number of customer orders: \"))\n",
" if number_orders > 0:\n",
" valid_input = True\n",
" else:\n",
" print(\"Number of orders must be greater than zero.\")\n",
" except ValueError:\n",
" print(\"Invalid input. Please enter a valid number.\")\n",
"\n",
" # Product names\n",
" for _ in range(number_orders):\n",
" valid_input = False\n",
" while not valid_input:\n",
" product = input(\"Enter the name of a product: \").lower()\n",
"\n",
" if product in inventory and inventory[product] > 0:\n",
" customer_orders.add(product)\n",
" valid_input = True\n",
" elif product not in inventory:\n",
" print(\"Product not found in inventory.\")\n",
" else:\n",
" print(\"Product out of stock.\")\n",
"\n",
" return customer_orders"
]
},
{
"cell_type": "code",
"execution_count": 5,
"id": "3d8423bf-07a5-4940-8157-f3eb31f6f3ec",
"metadata": {},
"outputs": [],
"source": [
"#4."
]
},
{
"cell_type": "code",
"execution_count": 6,
"id": "098eaae3-227b-4400-9aea-96c97c0ae012",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the quantity of t-shirts available: j\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: 4\n",
"Enter the quantity of mugs available: 0\n",
"Enter the quantity of hats available: 1\n",
"Enter the quantity of books available: r\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 books available: 5\n",
"Enter the quantity of keychains available: 6\n"
]
}
],
"source": [
"inventory = initialize_inventory(products)"
]
},
{
"cell_type": "code",
"execution_count": 10,
"id": "a26736ec-2bee-45f2-a8cd-068d3dc29529",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the number of customer orders: 2\n",
"Enter the name of a product: 6\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Product not found in inventory.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the name of a product: mug\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Product out of stock.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the name of a product: book\n",
"Enter the name of a product: hat\n"
]
}
],
"source": [
"customer_orders = get_customer_orders(inventory)"
]
},
{
"cell_type": "code",
"execution_count": 11,
"id": "a3c6c385-03f5-4cea-9143-74c7012d72df",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the price for book: 10\n",
"Enter the price for hat: 5\n"
]
}
],
"source": [
"total_price = calculate_total_price(customer_orders)"
]
},
{
"cell_type": "code",
"execution_count": 12,
"id": "a76e99f3-eafe-44e5-896c-64eec0e4119f",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Customer orders: {'book', 'hat'}\n",
"Total price: 15.0\n"
]
}
],
"source": [
"print(\"Customer orders:\", customer_orders)\n",
"print(\"Total price:\", total_price)"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "c7da5782-4a97-4e53-8ad8-1ad689de1420",
"metadata": {},
"outputs": [],
"source": []
}
],
"metadata": {
Expand All @@ -90,7 +346,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.13.5"
}
},
"nbformat": 4,
Expand Down