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181 changes: 179 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 +72,188 @@
"\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": 108,
"id": "9ce21ae0",
"metadata": {},
"outputs": [],
"source": [
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]"
]
},
{
"cell_type": "code",
"execution_count": 109,
"id": "f1432c59",
"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": 110,
"id": "bc38abad",
"metadata": {},
"outputs": [],
"source": [
"inventory = initialize_inventory(products)"
]
},
{
"cell_type": "code",
"execution_count": 111,
"id": "c2a55262",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"{'t-shirt': 1, 'mug': 2, 'hat': 3, 'book': 4, 'keychain': 5}\n"
]
}
],
"source": [
"print(inventory)"
]
},
{
"cell_type": "code",
"execution_count": 118,
"id": "30c2176c",
"metadata": {},
"outputs": [],
"source": [
"def calculate_total_price(customer_orders):\n",
" \n",
" total_price = []\n",
" for product in customer_orders:\n",
" valid_price = False\n",
" while not valid_price:\n",
" try: \n",
" product = int((input(\"Enter the price of the product: \")))\n",
" if product >= 0:\n",
" total_price.append(product)\n",
" valid_price = True\n",
" else:\n",
" print(\"Price cannot be negative. Please enter a valid price.\")\n",
" product = 0\n",
" except ValueError:\n",
" print(\"Invalid input. Please enter a valid number.\")\n",
" return sum(total_price)\n"
]
},
{
"cell_type": "code",
"execution_count": 119,
"id": "21e284c4",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"The total number of products ordered is: 35\n"
]
}
],
"source": [
"total = calculate_total_price(customer_orders)\n",
"print(f\"The total number of products ordered is: {total}\")"
]
},
{
"cell_type": "code",
"execution_count": 114,
"id": "42d4c06e",
"metadata": {},
"outputs": [],
"source": [
"def get_customer_orders(inventory):\n",
" customer_orders = set()\n",
"\n",
" while True:\n",
" try:\n",
" num_orders = int(input(\"How many products do you want to order? \"))\n",
" if num_orders > 0:\n",
" break\n",
" else:\n",
" print(\"Order quantity must be greater than zero.\")\n",
" except ValueError:\n",
" print(\"Invalid input. Please enter a number.\")\n",
" for i in range(num_orders):\n",
" while True:\n",
" product = input(\"Which product do you want to order? \")\n",
"\n",
" if product not in inventory:\n",
" print(\"That product does not exist. Try again.\")\n",
" elif inventory[product] == 0:\n",
" print(\"Sorry, that product is out of stock.\")\n",
" else:\n",
" customer_orders.add(product)\n",
" break\n",
" \n",
" return customer_orders"
]
},
{
"cell_type": "code",
"execution_count": 115,
"id": "1f13ab37",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"That product does not exist. Try again.\n"
]
}
],
"source": [
"customer_orders = get_customer_orders(inventory)"
]
},
{
"cell_type": "code",
"execution_count": 116,
"id": "c0ec48dc",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"{'hat', 't-shirt', 'keychain', 'mug', 'book'}\n"
]
}
],
"source": [
"print(customer_orders)"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
Expand All @@ -90,7 +267,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.14.2"
}
},
"nbformat": 4,
Expand Down