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371 changes: 370 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 +72,375 @@
"\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": "b82ce2e3-6f24-4dd8-854d-78c1f8fd6abd",
"metadata": {},
"outputs": [
{
"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: red\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Error: invalid literal for int() with base 10: 'red'\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the quantity of hats available: 6\n",
"Enter the quantity of books available: 15\n",
"Enter the quantity of keychains available: 2\n",
"Enter the number of customer orders, 5\n",
"Enter the name of the product, hat\n",
"Please enter a valid quantity for hat: 6\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"You ordered: 6 of hat\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the name of the product, hat\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"'hat' is out of stock. Please choose another product.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the name of the product, mugs\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Not on inventory,please enter a valid product name.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the name of the product, t-shirt\n",
"Please enter a valid quantity for t-shirt: 6\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Only 5 are available please enter smaller number.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Please enter a valid quantity for t-shirt: 4\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"You ordered: 4 of t-shirt\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the name of the product, hat\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"'hat' is out of stock. Please choose another product.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the name of the product, book\n",
"Please enter a valid quantity for book: 5\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"You ordered: 5 of book\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the name of the product, mug\n",
"Please enter a valid quantity for mug: 6\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Only 4 are available please enter smaller number.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Please enter a valid quantity for mug: 5\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Only 4 are available please enter smaller number.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Please enter a valid quantity for mug: 2\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"You ordered: 2 of mug\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the name of the product, keychain\n",
"Please enter a valid quantity for keychain: 3\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Only 2 are available please enter smaller number.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Please enter a valid quantity for keychain: 1\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"You ordered: 1 of keychain\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Please enter the price for hat: 10\n",
"Please enter the price for t-shirt: 15\n",
"Please enter the price for book: 16\n",
"Please enter the price for mug: 5\n",
"Please enter the price for keychain: 100\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Total price for all products: 310.00\n"
]
},
{
"data": {
"text/plain": [
"{'hat': 10.0, 't-shirt': 15.0, 'book': 16.0, 'mug': 5.0, 'keychain': 100.0}"
]
},
"execution_count": 3,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"# Lista de productos\n",
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
"\n",
"\n",
"# Step 1: Define the function for initializing the inventory with error handling\n",
"\n",
"def initialize_inventory(products):\n",
" inventory = {}\n",
" for product in products:\n",
" valid_quantity = False\n",
" while not valid_quantity:\n",
" try:\n",
" quantity = int(input(f\"Enter the quantity of {product}s available: \"))\n",
" if quantity < 0:\n",
" raise ValueError(\"Invalid quantity! Please enter a non-negative value.\")\n",
" valid_quantity = True\n",
" except ValueError as error:\n",
" print(f\"Error: {error}\")\n",
" inventory[product] = quantity\n",
" return inventory\n",
"\n",
"# Step 2: Modify calculate_total_price:\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\"Please enter the price for {product}: \"))\n",
" if price < 0:\n",
" print(\"Price cannot be negative. Please enter a valid price.\")\n",
" else:\n",
" prices[product] = price\n",
" break\n",
" except ValueError:\n",
" print(f\"Please enter a valid, non-negative number.\")\n",
"\n",
"\n",
" total = sum(prices[product] * quantity for product, quantity in customer_orders.items())\n",
"\n",
" print(f\"Total price for all products: {total:.2f}\")\n",
" return prices\n",
"\n",
" \n",
"# Step 3: \n",
"\n",
"def get_customer_order(inventory):\n",
"\n",
" while True:\n",
" try:\n",
" num_orders = int(input(f\"Enter the number of customer orders, \"))\n",
" if num_orders < 0:\n",
" print(f\"Number of orders cannot be negative. Please try again.\")\n",
" else:\n",
" break\n",
" except ValueError:\n",
" print(f\"Invalid input please enter a valid number.\")\n",
"\n",
" orders = {}\n",
" for i in range(num_orders):\n",
" while True:\n",
" product = input(f\"Enter the name of the product, \").strip().lower()\n",
" if product not in inventory:\n",
" print(f\"Not on inventory,please enter a valid product name.\")\n",
" else:\n",
" if inventory[product] == 0:\n",
" print(f\"'{product}' is out of stock. Please choose another product.\")\n",
" else:\n",
" break\n",
"\n",
" while True:\n",
" try:\n",
" quantity = int(input(f\"Please enter a valid quantity for {product}: \"))\n",
" if quantity < 0:\n",
" print(\"Quantity can not be negative.\")\n",
" else:\n",
" if quantity > inventory[product]:\n",
" print(f\"Only {inventory[product]} are available please enter smaller number.\")\n",
" else:\n",
" if product in orders:\n",
" orders[product] += quantity\n",
" else:\n",
" orders[product] = quantity\n",
" inventory[product] -= quantity\n",
" print(f\"You ordered: {quantity} of {product}\")\n",
" break\n",
" except ValueError:\n",
" print(f\"Invalid input. Please enter a valid quantity.\")\n",
"\n",
" return orders\n",
" \n",
"\n",
"inventory = initialize_inventory(products)\n",
"customer_orders = get_customer_order(inventory)\n",
"calculate_total_price(customer_orders) \n",
" \n",
" \n",
" \n",
" \n",
"\n",
" \n",
" \n",
" \n",
" \n",
" \n",
" \n",
"\n",
"\n",
" \n",
" \n",
" \n",
" \n",
" \n",
" "
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "00e08e80-e4fd-4ecf-a9b3-7640b15aba1f",
"metadata": {},
"outputs": [],
"source": []
},
{
"cell_type": "code",
"execution_count": null,
"id": "8cea139b-9623-4796-8e79-28dd771565bb",
"metadata": {},
"outputs": [],
"source": []
},
{
"cell_type": "code",
"execution_count": null,
"id": "5725ba69-8e9e-4fcd-8b02-544d32ab6b0e",
"metadata": {},
"outputs": [],
"source": []
}
],
"metadata": {
Expand All @@ -90,7 +459,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.13.1"
}
},
"nbformat": 4,
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