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lab3 done #515

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145 changes: 143 additions & 2 deletions lab-python-functions.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -43,11 +43,152 @@
"\n",
"\n"
]
},
{
"cell_type": "code",
"execution_count": 1,
"id": "3386b41f",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"\n",
"=== Initialize Inventory ===\n",
"\n",
"=== Take Customer Orders ===\n",
"\n",
"=== Update Inventory ===\n",
"- 't-shirt' deducted by 1. New stock: 4\n",
"\n",
"=== Order Statistics ===\n",
"- Total unique products ordered: 1\n",
"- % of unique catalog ordered: 20.00%\n",
"\n",
"=== Updated Inventory ===\n",
"- t-shirt: 4\n",
"- mug: 2\n",
"- hat: 3\n",
"- book: 1\n",
"- keychain: 4\n"
]
}
],
"source": [
"def initialize_inventory(products):\n",
" \"\"\"\n",
" Ask the user for a starting quantity for each product.\n",
" Returns a dictionary like: {'t-shirt': 5, 'mug': 3, ...}\n",
" \"\"\"\n",
" inventory = {}\n",
" print(\"\\n=== Initialize Inventory ===\")\n",
" for p in products:\n",
" while True:\n",
" raw = input(f\"Enter the quantity of '{p}': \").strip()\n",
" if raw.isdigit():\n",
" inventory[p] = int(raw)\n",
" break\n",
" else:\n",
" print(\"Please enter a non-negative integer (e.g., 0, 1, 2, ...).\")\n",
" return inventory\n",
"\n",
"\n",
"def get_customer_orders():\n",
" \"\"\"\n",
" Interactively collect product names from the user.\n",
" Returns a set of unique product names the customer wants.\n",
" \"\"\"\n",
" customer_orders = set()\n",
" print(\"\\n=== Take Customer Orders ===\")\n",
" while True:\n",
" item = input(\"Enter a product name (or press Enter to stop): \").strip().lower()\n",
" if item == \"\":\n",
" \n",
" break\n",
" customer_orders.add(item)\n",
"\n",
" \n",
" while True:\n",
" another = input(\"Add another product? (yes/no): \").strip().lower()\n",
" if another in (\"yes\", \"no\", \"y\", \"n\"):\n",
" break\n",
" print(\"Please type 'yes' or 'no'.\")\n",
" if another in (\"no\", \"n\"):\n",
" break\n",
"\n",
" return customer_orders\n",
"\n",
"\n",
"def update_inventory(customer_orders, inventory):\n",
" \"\"\"\n",
" For each product the customer ordered (unique), deduct 1 from inventory if available.\n",
" If a product doesn't exist or is out of stock, show a helpful message.\n",
" \"\"\"\n",
" print(\"\\n=== Update Inventory ===\")\n",
" for item in customer_orders:\n",
" if item not in inventory:\n",
" print(f\"- '{item}' is not in our product list. (Skipped)\")\n",
" continue\n",
" if inventory[item] > 0:\n",
" inventory[item] -= 1\n",
" print(f\"- '{item}' deducted by 1. New stock: {inventory[item]}\")\n",
" else:\n",
" print(f\"- '{item}' is out of stock. (No change)\")\n",
"\n",
"\n",
"def calculate_order_statistics(customer_orders, products):\n",
" \"\"\"\n",
" Calculate:\n",
" - total unique products ordered\n",
" - percentage of unique products ordered relative to total available products\n",
" Returns a tuple: (total_unique_ordered, percent_unique)\n",
" \"\"\"\n",
" total_unique = len(customer_orders)\n",
" total_products = len(products)\n",
" percent_unique = (total_unique / total_products * 100) if total_products else 0.0\n",
" return total_unique, percent_unique\n",
"\n",
"\n",
"def print_order_statistics(order_statistics):\n",
" \"\"\"\n",
" Nicely print the order statistics returned by calculate_order_statistics.\n",
" \"\"\"\n",
" total_unique, percent_unique = order_statistics\n",
" print(\"\\n=== Order Statistics ===\")\n",
" print(f\"- Total unique products ordered: {total_unique}\")\n",
" print(f\"- % of unique catalog ordered: {percent_unique:.2f}%\")\n",
"\n",
"\n",
"def print_updated_inventory(inventory):\n",
" \"\"\"\n",
" Print the updated inventory in a simple, readable format.\n",
" \"\"\"\n",
" print(\"\\n=== Updated Inventory ===\")\n",
" if not inventory:\n",
" print(\"(No inventory data.)\")\n",
" return\n",
" for product, qty in inventory.items():\n",
" print(f\"- {product}: {qty}\")\n",
"\n",
"\n",
"if __name__ == \"__main__\":\n",
" # You can adjust this list anytime\n",
" products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
"\n",
" inventory = initialize_inventory(products)\n",
" customer_orders = get_customer_orders()\n",
" update_inventory(customer_orders, inventory)\n",
"\n",
" stats = calculate_order_statistics(customer_orders, products)\n",
" print_order_statistics(stats)\n",
" print_updated_inventory(inventory)\n"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
Expand All @@ -61,7 +202,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.9.6"
}
},
"nbformat": 4,
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