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373 changes: 371 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 +72,380 @@
"\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": 8,
"id": "2cb6bac8",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Invalid input. invalid literal for int() with base 10: 's'\n",
"Invalid input. Cannot have negative orders. Enter valid number\n",
"Enter the quantity of t-shirt avalable: 8\n",
"Enter the quantity of mug avalable: 8\n",
"Enter the quantity of hat avalable: 8\n",
"Enter the quantity of book avalable: 8\n",
"Enter the quantity of keychain avalable: 8\n",
"Invalid input. invalid literal for int() with base 10: 'f' Enter a valid number.\n",
"Invalid input. Available products: ['t-shirt', 'mug', 'hat', 'book', 'keychain']\n",
"Product ordered: mug\n",
"Product ordered: book\n",
"Invalid input. could not convert string to float: 'd' Enter a valid positive number.\n",
"Invalid input. Negative number, that is wrong, add price of good Enter a valid positive number.\n",
"Invalid input. Negative number, that is wrong, add price of good Enter a valid positive number.\n",
"Product Prices:\n",
"mug: €5.0\n",
"book: €40.0\n",
"Total price of customer order: 45.0\n"
]
}
],
"source": [
"#### clean code\n",
"\n",
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
"\n",
"\n",
"### Setting up inventory count with error handling\n",
"def initialize_inventory(products):\n",
" \"\"\"function for inventory count for each of \n",
" the products in the list and including error handing\"\"\"\n",
" inventory = {}\n",
" for item in products:\n",
" \n",
" while True:\n",
" try:\n",
" quantity = int(input(f\"Please insert inventory count for {item}: \"))\n",
" \n",
" if quantity < 0:\n",
" raise ValueError(f\"Cannot have negative orders. Enter valid number\")\n",
" \n",
" inventory[item] = quantity\n",
" break\n",
"\n",
" except ValueError as ve:\n",
" print(f\"Invalid input. {str(ve)}\")\n",
" \n",
"\n",
" for item in inventory:\n",
" print(f\"Enter the quantity of {item} avalable: {inventory[item]}\")\n",
" \n",
" return inventory\n",
"\n",
"\n",
"#calling the inventory once input recived \n",
"inventory = initialize_inventory(products)\n",
"\n",
"\n",
"\n",
"#setting up error handling to get customer order \n",
"def get_customer_orders(inventory):\n",
" \"\"\"Prompt to get customer order and gather \n",
" product name with error handing\"\"\"\n",
"\n",
" #setting up error handling for initial count of orders to place\n",
" while True:\n",
" try:\n",
"\n",
" num_orders = int(input(\"Enter the number of products customer wants to order: \"))\n",
"\n",
" if num_orders < 0:\n",
" raise ValueError(\"Cannot have negative orders. Enter number of orders\")\n",
" break\n",
"\n",
" except ValueError as ve:\n",
" print(f\"Invalid input. {str(ve)} Enter a valid number.\")\n",
" \n",
" customer_orders = []\n",
" \n",
" #setting up an error handling for selecting from inventory avalable \n",
" while len(customer_orders) < num_orders:\n",
" try:\n",
" product_name = input(f\"Enter product name of the order {len(customer_orders) + 1}:\")\n",
"\n",
" if product_name not in inventory:\n",
" raise ValueError (f\"Product is not available or you spelled the product wrong. Select from the following: {products} \")\n",
"\n",
" customer_orders.append(product_name)\n",
"\n",
" except:\n",
" # Handle invalid product names with an informative message\n",
" print(f\"Invalid input. Available products: {products}\") \n",
"\n",
" for order in customer_orders:\n",
" print(f\"Product ordered: {order}\")\n",
"\n",
"\n",
" return customer_orders\n",
"\n",
"#call for what customer wants to buy\n",
"customer_orders = get_customer_orders(inventory)\n",
"\n",
"\n",
"\n",
"# calculating the price of the customer orders. Add Error Handing here\n",
"def calculate_total_price(customer_orders):\n",
" \"\"\"calculate the price, get input, store in dictionary\n",
" \"\"\"\n",
"\n",
" prices = {}\n",
"\n",
" for product in customer_orders:\n",
"\n",
" while True:\n",
" try:\n",
" input_price = float(input(f\"Enter the price of {product}\"))\n",
"\n",
" if input_price < 0:\n",
" raise ValueError(\"Negative number, that is wrong, add price of good\")\n",
" \n",
" prices[product] = input_price\n",
" break\n",
"\n",
" except ValueError as e:\n",
" print(f\"Invalid input. {str(e)} Enter a valid positive number.\")\n",
"\n",
" total_price = sum(prices.values())\n",
"\n",
" return total_price, prices\n",
"\n",
"\n",
"total_price, product_price = calculate_total_price(customer_orders)\n",
"\n",
"print(\"Product Prices:\")\n",
"for product, price in product_price.items():\n",
" print(f\"{product}: €{price}\")\n",
"\n",
"\n",
"print(f\"Total price of customer order: {total_price}\")"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "0c9e00a8",
"metadata": {},
"outputs": [],
"source": []
},
{
"cell_type": "code",
"execution_count": null,
"id": "e51d6ef4",
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"cell_type": "markdown",
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"source": [
"Below is split into sections to solve the Exercise (all copied to the above)"
]
},
{
"cell_type": "code",
"execution_count": 2,
"id": "1defffe6",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Enter the quantity of t-shirt avalable: 4\n",
"Enter the quantity of mug avalable: 4\n",
"Enter the quantity of hat avalable: 4\n",
"Enter the quantity of book avalable: 4\n",
"Enter the quantity of keychain avalable: 4\n"
]
}
],
"source": [
"## 1. Error handiling for the initialize inventory\n",
"\n",
"\n",
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
"\n",
"def initialize_inventory(products):\n",
" \"\"\"function for inventory count for each of \n",
" the products in the list and including error handing\"\"\"\n",
" inventory = {}\n",
" for item in products:\n",
" \n",
" while True:\n",
" try:\n",
" quantity = int(input(f\"Please insert inventory count for {item}: \"))\n",
" \n",
" if quantity < 0:\n",
" raise ValueError(f\"Cannot have negative orders. Enter valid number\")\n",
" \n",
" inventory[item] = quantity\n",
" break\n",
"\n",
" except ValueError as ve:\n",
" print(f\"Invalid input. {str(ve)}\")\n",
" \n",
"\n",
" for item in inventory:\n",
" print(f\"Enter the quantity of {item} avalable: {inventory[item]}\")\n",
" \n",
" return inventory\n",
"\n",
"\n",
"inventory = initialize_inventory(products)"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "fa5b8279",
"metadata": {},
"outputs": [],
"source": []
},
{
"cell_type": "code",
"execution_count": 6,
"id": "49aa6afe",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Invalid input. invalid literal for int() with base 10: 's' Enter a valid number.\n",
"Invalid input. Available products: ['t-shirt', 'mug', 'hat', 'book', 'keychain']\n",
"Product ordered: mug\n",
"Product ordered: book\n"
]
}
],
"source": [
"\n",
"#setting up error handling to get customer order \n",
"\n",
"\n",
"def get_customer_orders(inventory):\n",
" \"\"\"Prompt to get customer order and gather \n",
" product name with error handing\"\"\"\n",
"\n",
" #setting up error handling for initial count of orders to place\n",
" while True:\n",
" try:\n",
"\n",
" num_orders = int(input(\"Enter the number of products customer wants to order: \"))\n",
"\n",
" if num_orders < 0:\n",
" raise ValueError(\"Cannot have negative orders. Enter number of orders\")\n",
" break\n",
"\n",
" except ValueError as ve:\n",
" print(f\"Invalid input. {str(ve)} Enter a valid number.\")\n",
" \n",
" customer_orders = []\n",
" \n",
" #setting up an error handling for selecting from inventory avalable \n",
" while len(customer_orders) < num_orders:\n",
" try:\n",
" product_name = input(f\"Enter product name of the order {len(customer_orders) + 1}:\")\n",
"\n",
" if product_name not in inventory:\n",
" raise ValueError (f\"Product is not available or you spelled the product wrong. Select from the following: {products} \")\n",
"\n",
" customer_orders.append(product_name)\n",
"\n",
" except:\n",
" # Handle invalid product names with an informative message\n",
" print(f\"Invalid input. Available products: {products}\") \n",
"\n",
" for order in customer_orders:\n",
" print(f\"Product ordered: {order}\")\n",
"\n",
"\n",
" return customer_orders\n",
"\n",
"#call for what customer wants to buy\n",
"customer_orders = get_customer_orders(inventory)\n",
"\n"
]
},
{
"cell_type": "code",
"execution_count": 7,
"id": "b8a521ea",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Product Prices:\n",
"mug: €4.0\n",
"book: €21.0\n",
"Total price of customer order: 25.0\n"
]
}
],
"source": [
"\n",
"#2. calculating the price of the customer orders. Add Error Handing here\n",
"\n",
"\n",
"\n",
"def calculate_total_price(customer_orders):\n",
" \"\"\"calculate the price, get input, store in dictionary\n",
" \"\"\"\n",
"\n",
" prices = {}\n",
"\n",
" for product in customer_orders:\n",
"\n",
" while True:\n",
" try:\n",
" input_price = float(input(f\"Enter the price of {product}\"))\n",
"\n",
" if input_price < 0:\n",
" raise ValueError(\"Negative number, that is wrong, add price of good\")\n",
" \n",
" prices[product] = input_price\n",
" break\n",
"\n",
" except ValueError as e:\n",
" print(f\"Invalid input. {str(e)} Enter a valid positive number.\")\n",
"\n",
" total_price = sum(prices.values())\n",
"\n",
" return total_price, prices\n",
"\n",
"\n",
"total_price, product_price = calculate_total_price(customer_orders)\n",
"\n",
"print(\"Product Prices:\")\n",
"for product, price in product_price.items():\n",
" print(f\"{product}: €{price}\")\n",
"\n",
"\n",
"print(f\"Total price of customer order: {total_price}\")"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"display_name": "data-analytics",
"language": "python",
"name": "python3"
},
Expand All @@ -90,7 +459,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.9.23"
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"nbformat": 4,
Expand Down