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Lab solved #542

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112 changes: 110 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 +72,119 @@
"\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": 10,
"id": "190b1c99",
"metadata": {},
"outputs": [],
"source": [
"#1: Define the function for initializing the inventory with error handling\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(f\"Invalid quantity: {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"
]
},
{
"cell_type": "code",
"execution_count": 11,
"id": "f7493b3e",
"metadata": {},
"outputs": [],
"source": [
"#2 Modification of the calculate_total_price function to include error handling:\n",
"def calculate_total_price (customer_orders):\n",
" price_product = []\n",
" for product in customer_orders:\n",
" valid_price = False \n",
" while not valid_price:\n",
" try:\n",
" price = float(input(f\"Enter the price of {product}\"))\n",
" if price < 0:\n",
" raise ValueError (f\"Invalid price: {price}. Please enter a non-negative value.\")\n",
" valid_price = True\n",
" price_product.append(price)\n",
" except ValueError as error:\n",
" print(f\"Error: {error}.\") \n",
" \n",
" return sum(price_product)"
]
},
{
"cell_type": "code",
"execution_count": 12,
"id": "3eb5d4a3",
"metadata": {},
"outputs": [],
"source": [
"#3 Modification of the get_customer_orders function to include error handling:\n",
"def get_customer_orders (inventory):\n",
" valid_num_order = False\n",
" while not valid_num_order:\n",
" try:\n",
" num_orders = int(input('Enter the number of customer orders: '))\n",
" if num_orders < 0:\n",
" raise ValueError (f\"Invalid number of orders: {num_orders}! Please enter a non-negative value.\")\n",
" valid_num_order = True\n",
" except ValueError as error:\n",
" print(f\"Error: {error}.\")\n",
"\n",
" customer_orders = []\n",
" for i in range(num_orders):\n",
" valid_product = False \n",
" while not valid_product:\n",
" try:\n",
" preference = input(\"Enter the name of a products that a customer wants to order:\")\n",
" if not (preference in inventory) or inventory[preference] < 0:\n",
" raise ValueError(f\"Sorry! {preference} is not available.\")\n",
" valid_product = True\n",
" customer_orders.append(preference) \n",
" except ValueError as error:\n",
" print(f\"Error: {error}.\") \n",
" return customer_orders"
]
},
{
"cell_type": "code",
"execution_count": 13,
"id": "1f19e621",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Error: Invalid quantity: -2! Please enter a non-negative value.\n",
"Error: Invalid number of orders: -1! Please enter a non-negative value..\n",
"Error: could not convert string to float: 'g'.\n"
]
}
],
"source": [
"#4 Results \n",
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
"inventory = initialize_inventory(products)\n",
"customer_orders = get_customer_orders (inventory)\n",
"total_price = calculate_total_price (customer_orders)\n",
"\n"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
Expand All @@ -90,7 +198,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.14.0"
}
},
"nbformat": 4,
Expand Down