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lab-python-error-handling.ipynb #571

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150 changes: 148 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 +72,157 @@
"\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": 5,
"id": "aef49fe3",
"metadata": {},
"outputs": [],
"source": [
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
"\n",
"def initialize_inventory(product):\n",
" inventory = {}\n",
" for product in products:\n",
" valid_input = False\n",
" while not valid_input:\n",
" try:\n",
" quantity = int(input(f\"Enter quantity of {product}: \"))\n",
" if quantity >= 0:\n",
" inventory[product] = quantity\n",
" valid_input = True\n",
" else:\n",
" print(\"Quantity can not be negative. Please enter a valid quantity.\")\n",
" except ValueError:\n",
" print(\"Invalid input, Please enter a valid quantity.\")\n",
"\n",
" return inventory"
]
},
{
"cell_type": "code",
"execution_count": 7,
"id": "1a10a2c3",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Invalid input, Please enter a valid quantity.\n",
"Invalid input, Please enter a valid quantity.\n",
"Invalid input, Please enter a valid quantity.\n"
]
}
],
"source": [
"inventory = initialize_inventory(products)"
]
},
{
"cell_type": "code",
"execution_count": 29,
"id": "4dbf62af",
"metadata": {},
"outputs": [],
"source": [
"def calculate_total_order_value(customer_orders):\n",
" for products in customer_orders:\n",
" Valid_input = False\n",
" while not Valid_input:\n",
" try:\n",
" product_prices = float(input(f\"Enter price for {products}: \"))\n",
" total_price = 0\n",
" total_price += product_prices\n",
"\n",
" if product_prices > 0:\n",
" Valid_input = True\n",
" else:\n",
" print(\"Price cannot be 0 or negative. Please enter a valid price.\")\n",
"\n",
" except ValueError:\n",
" print(\"Invalid input, Please enter a valid price.\")\n",
" return total_price"
]
},
{
"cell_type": "code",
"execution_count": 57,
"id": "fc910856",
"metadata": {},
"outputs": [],
"source": [
"def get_customer_order():\n",
" customer_orders = set()\n",
" Valid_input = False\n",
" while not Valid_input:\n",
" try:\n",
" num_orders = int(input(\"Enter the number of customer orders: \"))\n",
" if num_orders > 0:\n",
" Valid_input = True\n",
" else:\n",
" print(\"Number of orders must be positive. Please enter a valid number.\")\n",
" except ValueError:\n",
" print(\"Invalid input, Please enter a valid number.\")\n",
"\n",
" for _ in range(num_orders):\n",
" while True:\n",
" try:\n",
" product_ordered = input(\"Which product does customer order?\").strip().lower()\n",
" if not product_ordered in products:\n",
" raise ValueError(\"Product not found in inventory.\")\n",
" customer_orders.add(product_ordered)\n",
" break \n",
" except ValueError: \n",
" print(\"Product not found in inventory. Please enter a valid product.\")\n",
" \n",
" return customer_orders"
]
},
{
"cell_type": "code",
"execution_count": 56,
"id": "5dbaa242",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Product not found in inventory. Please enter a valid product.\n"
]
}
],
"source": [
"customer_orders = get_customer_order()"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "8873ccb4",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Price cannot be 0 or negative. Please enter a valid price.\n",
"The total order value is: 90.0\n"
]
}
],
"source": [
"\n",
"total_price = calculate_total_order_value(customer_orders)\n",
"print(f\"The total order value is: {total_price}\")"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"display_name": "base",
"language": "python",
"name": "python3"
},
Expand All @@ -90,7 +236,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.13.5"
}
},
"nbformat": 4,
Expand Down