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142 changes: 140 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 +72,149 @@
"\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": "81226195",
"metadata": {},
"outputs": [],
"source": [
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"] # list of products\n",
"\n",
"\n",
"def initialize_inventory(products): # error handling enhancement\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\n",
"\n",
"\n",
"def get_customer_orders(): # error handling enhancement\n",
" # set comprehension\n",
" num_orders = int(input(\"Enter the number of customer orders: \"))\n",
" customer_orders = set()\n",
" for _ in range(num_orders):\n",
" valid_input = False\n",
" while not valid_input:\n",
" product = input(\"Enter the name of a product that a customer wants to order: \").strip().lower()\n",
" if product in inventory and inventory[product] > 0:\n",
" customer_orders.add(product)\n",
" valid_input = True\n",
" else:\n",
" print(\"Invalid product name or insufficient stock. Please enter a valid product name.\")\n",
" return customer_orders\n",
"\n",
"\n",
"def update_inventory(customer_orders, inventory):\n",
" # update quantities with comprehension\n",
" updated_inventory = {\n",
" product: (qty - 1 if product in customer_orders else qty)\n",
" for product, qty in inventory.items()\n",
" }\n",
"\n",
" # remove products with zero quantity (filter with comprehension)\n",
" updated_inventory = {product: qty for product, qty in updated_inventory.items() if qty > 0}\n",
"\n",
" return updated_inventory\n",
"\n",
"\n",
"def calculate_order_statistics(customer_orders, products):\n",
" total_products_ordered = len(customer_orders)\n",
" percentage_unique_products = (len(customer_orders) / len(products)) * 100 if products else 0\n",
" return total_products_ordered, percentage_unique_products\n",
"\n",
"\n",
"def print_order_statistics(order_statistics):\n",
" total_products_ordered, percentage_unique_products = order_statistics\n",
" print(\"\\nOrder Statistics:\")\n",
" print(f\"Total Products Ordered: {total_products_ordered}\")\n",
" print(f\"Percentage of Unique Products Ordered: {percentage_unique_products:.1f}\")\n",
"\n",
"\n",
"def print_updated_inventory(inventory):\n",
" print(\"\\nUpdated Inventory:\")\n",
" for product, qty in inventory.items():\n",
" print(f\"{product}: {qty}\")\n",
"\n",
"\n",
"def calculate_total_price(customer_orders): #error handling enhancement\n",
" # dict comprehension + sum\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[product] = 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",
" total_price = sum(prices.values())\n",
" return total_price\n",
"\n",
"\n",
"\n"
]
},
{
"cell_type": "code",
"execution_count": 3,
"id": "4e476321",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Invalid product name or insufficient stock. Please enter a valid product name.\n",
"Invalid product name or insufficient stock. Please enter a valid product name.\n",
"\n",
"Order Statistics:\n",
"Total Products Ordered: 2\n",
"Percentage of Unique Products Ordered: 40.0\n",
"\n",
"Updated Inventory:\n",
"t-shirt: 1\n",
"mug: 2\n",
"book: 1\n",
"keychain: 2\n",
"\n",
"Total Price: 12.0\n"
]
}
],
"source": [
"inventory = initialize_inventory(products)\n",
"customer_orders = get_customer_orders()\n",
"\n",
"order_statistics = calculate_order_statistics(customer_orders, products)\n",
"print_order_statistics(order_statistics)\n",
"\n",
"inventory = update_inventory(customer_orders, inventory)\n",
"print_updated_inventory(inventory)\n",
"\n",
"total_price = calculate_total_price(customer_orders)\n",
"print(f\"\\nTotal Price: {total_price}\")"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
Expand All @@ -90,7 +228,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.12.9"
}
},
"nbformat": 4,
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