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solved the lab #696

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131 changes: 129 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 +72,138 @@
"\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": 2,
"id": "e88770df",
"metadata": {},
"outputs": [],
"source": [
"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(f\"Error: {error}\")\n",
" total_price += price\n",
" return total_price"
]
},
{
"cell_type": "markdown",
"id": "c3981370",
"metadata": {},
"source": [
"Modify the `get_customer_orders` function to include error handling.\n",
" - 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",
" - 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",
" - Use a try-except block to handle the error and continue prompting the user until a valid product name is entered."
]
},
{
"cell_type": "code",
"execution_count": 3,
"id": "092deebc",
"metadata": {},
"outputs": [],
"source": [
"def get_customer_orders(inventory):\n",
" valid_number = False\n",
" while not valid_number:\n",
" try :\n",
" num_orders = int(input(\"Enter the number of customer orders: \"))\n",
" if num_orders < 0:\n",
" raise ValueError(\"inavalid price!please enter a non-negative value.\")\n",
" valid_number = True\n",
" except ValueError as error:\n",
" print(f\"error : {error}\")\n",
"\n",
" customer_orders = set()\n",
" for i 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:\n",
" print(f\"Error: '{product}' is out of stock. Please choose a different product.\")\n",
" else:\n",
" customer_orders.add(product)\n",
" return customer_orders"
]
},
{
"cell_type": "code",
"execution_count": 4,
"id": "1e54577e",
"metadata": {},
"outputs": [],
"source": [
"def get_customer_orders(inventory):\n",
" valid_number = False\n",
" while not valid_number:\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_number = True\n",
" except ValueError as error:\n",
" print(f\"Error: {error}\")\n",
"\n",
" customer_orders = set()\n",
" for i 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:\n",
" print(f\"Error: '{product}' is not a valid product in the inventory. Please enter a valid product name.\")\n",
" elif inventory[product] == 0:\n",
" print(f\"Error: '{product}' is out of stock. Please choose a different product.\")\n",
" else:\n",
" customer_orders.add(product)\n",
" valid_product = True\n",
"\n",
" return customer_orders"
]
},
{
"cell_type": "code",
"execution_count": 5,
"id": "cbc8e13e",
"metadata": {},
"outputs": [],
"source": [
"inventory = {\"apple\": 5, \"banana\": 0, \"orange\": 3}"
]
},
{
"cell_type": "code",
"execution_count": 6,
"id": "ddf9434d",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"{'apple'}\n"
]
}
],
"source": [
"orders = get_customer_orders(inventory)\n",
"print(orders)"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"display_name": "base",
"language": "python",
"name": "python3"
},
Expand All @@ -90,7 +217,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.13.9"
}
},
"nbformat": 4,
Expand Down