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[lab-python-error-handling]Sergio Florido #10

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8aec9dc
teste git
sergiosoutinho Jul 18, 2023
6d70871
lab done
sergiosoutinho Jul 18, 2023
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121 changes: 120 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 +72,125 @@
"\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": 6,
"id": "b89b3046",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Enter the quantity of t-shirts available: 1d\n",
"Enter a valid quantity number\n",
"Enter the quantity of t-shirts available: 10\n",
"Enter the quantity of mugs available: 10\n",
"Enter the quantity of hats available: 10\n",
"Enter the quantity of books available: 10\n",
"Enter the quantity of keychains available: 10\n",
"Enter the number of customer orders: d\n",
"Enter a valid number\n",
"Enter the number of customer orders: 2\n",
"Enter the name of a product that a customer wants to order: 1\n",
"Invalid product name or out of stock! Please enter a valid product name.\n",
"Enter the name of a product that a customer wants to order: hat\n",
"Enter the name of a product that a customer wants to order: mug\n",
"\n",
"Order Statistics:\n",
"Total Products Ordered: 2\n",
"Percentage of Unique Products Ordered: 100.0%\n",
"\n",
"Updated Inventory:\n",
"t-shirt: 9\n",
"book: 9\n",
"keychain: 9\n",
"Enter the price of hat: l\n",
"Error: Enter a valid price number \n",
"Enter the price of hat: 19\n",
"Enter the price of mug: 19\n",
"Total Price: 38.0\n"
]
}
],
"source": [
"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.\") #If the user enters an invalid price (e.g., a negative value or a non-numeric value), display an error message and ask them to re-enter the price for that product.\n",
" valid_quantity = True\n",
" except ValueError as error: #Use a try-except block to handle the error and continue prompting the user until a valid price is entered.\n",
" print(\"Enter a valid quantity number\")\n",
" inventory[product] = quantity\n",
" return inventory\n",
"\n",
"def get_customer_orders(inventory):\n",
" valid_num_orders = False\n",
" while not valid_num_orders: #If the user enters an invalid number of orders (e.g., a negative value or a non-numeric value), display an error message and ask them to re-enter the number of orders.\n",
" try:\n",
" num_orders = int(input(\"Enter the number of customer orders: \"))\n",
" if num_orders < 0:\n",
" raise ValueError(\"Invalid number of orders! Please enter a non-negative value.\")\n",
" valid_num_orders = True\n",
" except ValueError as error:\n",
" print(\"Enter a valid number\")\n",
" customer_orders = []\n",
" for _ in range(num_orders):\n",
" valid_product = False\n",
" while not valid_product:\n",
" product = input(\"Enter the name of a product that a customer wants to order: \")\n",
" if product not in inventory or inventory[product] == 0:\n",
" print(\"Invalid product name or out of stock! Please enter a valid product name.\") #If the user enters an invalid product name (e.g., a product name that is not in the inventory), or that doesn't have stock available, display an error message and ask them to re-enter the product name. Hint: you will need to pass inventory as a parameter\n",
" else:\n",
" valid_product = True\n",
" customer_orders.append(product)\n",
" return customer_orders\n",
"\n",
"def calculate_total_price(customer_orders):\n",
" total_price = 0\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(\"Invalid price! Please enter a non-negative value.\")\n",
" valid_price = True\n",
" except ValueError as error:\n",
" print(\"Error: Enter a valid price number \")\n",
" total_price += price\n",
" return total_price\n",
"\n",
"def update_inventory(inventory, customer_orders):\n",
" inventory = {product: quantity - 1 for product, quantity in inventory.items() if product not in customer_orders}\n",
" return inventory\n",
"\n",
"def print_total_price(total_price):\n",
" print(f\"Total Price: {total_price}\")\n",
" \n",
"def main():\n",
" products = ['t-shirt', 'mug', 'hat', 'book', 'keychain']\n",
" inventory = initialize_inventory(products)\n",
" customer_orders = get_customer_orders(inventory)\n",
" print(\"\\nOrder Statistics:\")\n",
" print(f\"Total Products Ordered: {len(customer_orders)}\")\n",
" print(f\"Percentage of Unique Products Ordered: {len(set(customer_orders)) / len(customer_orders) * 100}%\")\n",
" print(\"\\nUpdated Inventory:\")\n",
" \n",
" inventory = update_inventory(inventory, customer_orders)\n",
" for product, quantity in inventory.items():\n",
" print(f\"{product}: {quantity}\")\n",
" total_price = calculate_total_price(customer_orders)\n",
" print_total_price(total_price)\n",
"main()\n",
"\n"
]
}
],
"metadata": {
Expand All @@ -90,7 +209,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.10.9"
}
},
"nbformat": 4,
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