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Solved lab #456

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140 changes: 138 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 +72,147 @@
"\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": "606a5213",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Only 3 hat(s) available.\n",
"Only 3 hat(s) available.\n",
"Product not found in inventory. Please try again.\n",
"Product not found in inventory. Please try again.\n",
"Only 4 mug(s) available.\n",
"\n",
"Order Statistics:\n",
"Total Products Ordered: 2\n",
"Percentage of Unique Products Ordered: 40.0\n",
"\n",
"Updated Inventory:\n",
"t-shirt: 5\n",
"mug: 1\n",
"hat: 1\n",
"book: 2\n",
"keychain: 1\n",
"Total Price: {'hat': 10.0, 'mug': 5.0}\n"
]
}
],
"source": [
"#1.\n",
"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.\")\n",
" valid_quantity = True\n",
" except ValueError as error:\n",
" print(f\"Error: {error}\")\n",
" inventory[product] = quantity\n",
" return inventory\n",
"\n",
"#3.\n",
"def get_customer_orders(inventory):\n",
" orders = {}\n",
" while True:\n",
" try:\n",
" num_orders = int(input(\"How many different products would you like to order? \"))\n",
" if num_orders < 0:\n",
" print(\"Number of orders cannot be negative.\")\n",
" else:\n",
" break\n",
" except ValueError:\n",
" print(\"Invalid input. Please enter a number.\")\n",
" for i in range(num_orders):\n",
" while True:\n",
" product_name = input(f\"Enter the name of product #{i + 1}: \")\n",
" if product_name not in inventory:\n",
" print(\"Product not found in inventory. Please try again.\")\n",
" elif inventory[product_name] <= 0:\n",
" print(f\"Sorry, {product_name} is out of stock.\")\n",
" else:\n",
" while True:\n",
" try:\n",
" quantity = int(input(f\"How many {product_name}s do you want to order? \"))\n",
" if quantity < 0:\n",
" print(\"Quantity cannot be negative\")\n",
" elif quantity > inventory[product_name]:\n",
" print(f\"Only {inventory[product_name]} {product_name}(s) available.\")\n",
" else:\n",
" orders[product_name] = quantity\n",
" inventory[product_name] -= quantity\n",
" break\n",
" except ValueError:\n",
" print(\"Please enter a valid number.\")\n",
" break\n",
" return orders\n",
"\n",
"#\n",
"def update_inventory(customer_orders, inventory):\n",
" for item in customer_orders:\n",
" if item in inventory:\n",
" inventory[item] -= 1\n",
" return {product: quantity for product, quantity in inventory.items() if quantity > 0}\n",
"\n",
"#\n",
"def calculate_order_statistics(customer_orders, products):\n",
" total = len(customer_orders)\n",
" percent = (total / len(products)) * 100\n",
" return total, round(percent, 2)\n",
"\n",
"def print_order_statistics(stats):\n",
" print(\"\\nOrder Statistics:\")\n",
" print(\"Total Products Ordered:\", stats[0])\n",
" print(\"Percentage of Unique Products Ordered:\", stats[1])\n",
"\n",
"def print_updated_inventory(inventory):\n",
" print(\"\\nUpdated Inventory:\")\n",
" [print(f\"{item}: {quantity}\") for item, quantity in inventory.items()]\n",
"\n",
"#2.\n",
"def calculate_total_price(inventory):\n",
" prices = {}\n",
" for product in inventory:\n",
" while True:\n",
" try:\n",
" price = float(input(f\"Enter the price for {product}: €\"))\n",
" if price < 0:\n",
" print(\"Price cannot be negative. Please enter a valid price.\")\n",
" else:\n",
" prices[product] = price\n",
" break\n",
" except ValueError:\n",
" print(\"Invalid input. Please enter a number.\")\n",
" return prices\n",
"\n",
"#\n",
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
"\n",
"inventory = initialize_inventory(products)\n",
"customer_orders = get_customer_orders(inventory)\n",
"inventory = update_inventory(customer_orders, inventory)\n",
"stats = calculate_order_statistics(customer_orders, products)\n",
"\n",
"print_order_statistics(stats)\n",
"print_updated_inventory(inventory)\n",
"\n",
"total_price = calculate_total_price(customer_orders)\n",
"print(\"Total Price:\", total_price)"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
Expand All @@ -90,7 +226,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.13.5"
}
},
"nbformat": 4,
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