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Solved Lab: Python Functions #610

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375 changes: 375 additions & 0 deletions .ipynb_checkpoints/lab-python-functions-checkpoint.ipynb
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{
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{
"cell_type": "markdown",
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"metadata": {},
"source": [
"# Lab | Functions"
]
},
{
"cell_type": "markdown",
"id": "588191d8-1610-4938-aa11-83fa93557370",
"metadata": {
"tags": []
},
"source": [
"## Exercise: Managing Customer Orders with Functions\n",
"\n",
"In the previous exercise, you improved the code for managing customer orders by using loops and flow control. Now, let's take it a step further and refactor the code by introducing functions.\n",
"\n",
"Follow the steps below to complete the exercise:\n",
"\n",
"1. Define a function named `initialize_inventory` that takes `products` as a parameter. Inside the function, implement the code for initializing the inventory dictionary using a loop and user input.\n",
"\n",
"2. Define a function named `get_customer_orders` that takes no parameters. Inside the function, implement the code for prompting the user to enter the product names using a loop. The function should return the `customer_orders` set.\n",
"\n",
"3. Define a function named `update_inventory` that takes `customer_orders` and `inventory` as parameters. Inside the function, implement the code for updating the inventory dictionary based on the customer orders.\n",
"\n",
"4. Define a function named `calculate_order_statistics` that takes `customer_orders` and `products` as parameters. Inside the function, implement the code for calculating the order statistics (total products ordered, and percentage of unique products ordered). The function should return these values.\n",
"\n",
"5. Define a function named `print_order_statistics` that takes `order_statistics` as a parameter. Inside the function, implement the code for printing the order statistics.\n",
"\n",
"6. Define a function named `print_updated_inventory` that takes `inventory` as a parameter. Inside the function, implement the code for printing the updated inventory.\n",
"\n",
"7. Call the functions in the appropriate sequence to execute the program and manage customer orders.\n",
"\n",
"Hints for functions:\n",
"\n",
"- Consider the input parameters required for each function and their return values.\n",
"- Utilize function parameters and return values to transfer data between functions.\n",
"- Test your functions individually to ensure they work correctly.\n",
"\n",
"\n"
]
},
{
"cell_type": "code",
"execution_count": 32,
"id": "c089bf4d-1314-46a0-b2d7-6d1832ee9d34",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Please input the amount of t-shirts: 400\n",
"Please input the amount of mugs: 300\n",
"Please input the amount of hats: 200\n",
"Please input the amount of books: 100\n",
"Please input the amount of keychains: 50\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"The total number of items in stock is: 1050\n",
"Final Dictionary: {'t-shirt': 400, 'mug': 300, 'hat': 200, 'book': 100, 'keychain': 50}\n"
]
}
],
"source": [
"# 1. Define a function named initialize_inventory that takes products as a parameter.\n",
"# Inside the function, implement the code for initializing the inventory dictionary using a loop and user input.\n",
"\n",
"\n",
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
"\n",
"def initialize_inventory(products):\n",
" inventory = {}\n",
" \n",
" for product in products:\n",
" amount = int(input(f\"Please input the amount of {product}s: \"))\n",
" inventory[product] = amount \n",
" \n",
" total_items = sum(inventory.values())\n",
" print(f\"The total number of items in stock is: {total_items}\")\n",
" \n",
" return inventory\n",
"\n",
"# Test:\n",
"my_inventory = initialize_inventory(products)\n",
"print(\"Final Dictionary:\", my_inventory)"
]
},
{
"cell_type": "code",
"execution_count": 54,
"id": "992ab48e-189e-4e82-82d8-eaa3c3562297",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Please input product 1 you wish to order: mug\n",
"Please input product 2 you wish to order: book\n",
"Please input product 3 you wish to order: keychain\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"\n",
"Your final order is: {'book', 'mug', 'keychain'}\n"
]
}
],
"source": [
"# 2. Define a function named get_customer_orders that takes no parameters.\n",
"# Inside the function, implement the code for prompting the user to enter the product names using a loop. \n",
"# The function should return the customer_orders set.\n",
"\n",
"def get_customer_orders():\n",
" customer_orders = set()\n",
" \n",
" for i in range(3):\n",
" order = input(f\"Please input product {i+1} you wish to order: \")\n",
" \n",
" if order in products:\n",
" customer_orders.add(order)\n",
" else:\n",
" print(\"Sorry, we don't have that!\")\n",
" \n",
" return customer_orders\n",
"\n",
"customer_orders = get_customer_orders() \n",
"print(\"\\nYour final order is:\", customer_orders)"
]
},
{
"cell_type": "code",
"execution_count": 78,
"id": "591bcda2-8716-4550-97d3-627d67c2e4ef",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Updated t-shirt: 399 left in stock.\n",
"Updated mug: 299 left in stock.\n",
"\n",
"Final Inventory Status: {'t-shirt': 399, 'mug': 299, 'hat': 200, 'books': 100, 'keychains': 50}\n"
]
}
],
"source": [
"# 3. Define a function named update_inventory that takes customer_orders and inventory as parameters.\n",
"# Inside the function, implement the code for updating the inventory dictionary based on the customer orders.\n",
"\n",
"def update_inventory(customer_orders, inventory):\n",
" \n",
" for product in customer_orders:\n",
" \n",
" if product in inventory:\n",
" inventory[product] -= 1\n",
" print(f\"Updated {product}: {inventory[product]} left in stock.\")\n",
" else:\n",
" print(f\"Warning: {product} is not in the inventory records.\")\n",
" \n",
" return inventory\n",
"\n",
"# Test\n",
"current_inventory = {\"t-shirt\": 400, \"mug\": 300, \"hat\": 200, \"books\": 100, \"keychains\": 50}\n",
"orders = {\"t-shirt\", \"mug\"} \n",
"\n",
"updated_stock = update_inventory(orders, current_inventory)\n",
"\n",
"print(\"\\nFinal Inventory Status:\", updated_stock)"
]
},
{
"cell_type": "code",
"execution_count": 124,
"id": "4b850db7-88ee-410f-b4a2-62747bce1464",
"metadata": {},
"outputs": [],
"source": [
"# 4. Define a function named calculate_order_statistics that takes customer_orders and products as parameters.\n",
"# Inside the function, implement the code for calculating the order statistics (total products ordered, and percentage of unique products ordered).\n",
"# The function should return these values.\n",
"\n",
"def calculate_order_statistics(customer_orders, products):\n",
"\n",
" total_ordered = len(customer_orders)\n",
" total_products = len(products)\n",
"\n",
" try:\n",
" percentage = (total_ordered / total_products) * 100\n",
" except ZeroDivisionError:\n",
" percentage = 0\n",
" \n",
" return total_ordered, percentage"
]
},
{
"cell_type": "code",
"execution_count": 128,
"id": "5fb0b98e-5c76-466f-9a61-18535fbc39ec",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"-- Order Summary --\n",
"Total products ordered: 2\n",
"Percentage of products ordered: 40.00%\n"
]
}
],
"source": [
"# 5. Define a function named print_order_statistics that takes order_statistics as a parameter.\n",
"# Inside the function, implement the code for printing the order statistics.\n",
"\n",
"def print_order_statistics(order_statistics):\n",
"\n",
" total_ordered, percentage = order_statistics\n",
" print(\"-- Order Summary --\")\n",
" print(f\"Total products ordered: {total_ordered}\")\n",
" \n",
" print(f\"Percentage of products ordered: {percentage:.2f}%\")\n",
"\n",
"# Test\n",
"my_stats = (2, 40.0) \n",
"print_order_statistics(my_stats)\n"
]
},
{
"cell_type": "code",
"execution_count": 202,
"id": "c14ff6f1-cd52-46f0-a477-4715985a7700",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Updated t-shirt: 399 left in stock.\n",
"Updated mug: 299 left in stock.\n",
"-- Updated inventory --\n",
"Product: t-shirt | Stock: 399\n",
"Product: mug | Stock: 299\n",
"Product: hat | Stock: 200\n",
"Product: books | Stock: 100\n",
"Product: keychains | Stock: 50\n"
]
}
],
"source": [
"# 6. Define a function named print_updated_inventory that takes inventory as a parameter.\n",
"# Inside the function, implement the code for printing the updated inventory.\n",
"\n",
"def print_updated_inventory(inventory):\n",
"\n",
" print(\"-- Updated inventory --\")\n",
" \n",
" for product, quantity in inventory.items():\n",
" print(f\"Product: {product} | Stock: {quantity}\")\n",
"\n",
"# Test\n",
"current_inventory = {\"t-shirt\": 400, \"mug\": 300, \"hat\": 200, \"books\": 100, \"keychains\": 50}\n",
"orders = {\"t-shirt\", \"mug\"}\n",
"\n",
"updated_stock = update_inventory(orders, current_inventory)\n",
"print_updated_inventory(updated_stock)\n"
]
},
{
"cell_type": "code",
"execution_count": 206,
"id": "948cefd8-4e58-47b1-9ba6-dff9745651a4",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Please input the amount of t-shirts: 400\n",
"Please input the amount of mugs: 300\n",
"Please input the amount of hats: 200\n",
"Please input the amount of books: 100\n",
"Please input the amount of keychains: 50\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"The total number of items in stock is: 1050\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Please input product 1 you wish to order: mug\n",
"Please input product 2 you wish to order: hat\n",
"Please input product 3 you wish to order: keychain\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Updated hat: 199 left in stock.\n",
"Updated mug: 299 left in stock.\n",
"Updated keychain: 49 left in stock.\n",
"-- Order Summary --\n",
"Total products ordered: 3\n",
"Percentage of products ordered: 60.00%\n",
"-- Updated inventory --\n",
"Product: t-shirt | Stock: 400\n",
"Product: mug | Stock: 299\n",
"Product: hat | Stock: 199\n",
"Product: book | Stock: 100\n",
"Product: keychain | Stock: 49\n",
"Success! The order has been processed and the inventory is updated.\n"
]
}
],
"source": [
"# 7. Call the functions in the appropriate sequence to execute the program and manage customer orders.\n",
"\n",
"\n",
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
"current_inventory = initialize_inventory(products)\n",
"\n",
"customer_orders = get_customer_orders()\n",
"update_inventory(customer_orders, current_inventory)\n",
"\n",
"order_stats = calculate_order_statistics(customer_orders, products)\n",
"\n",
"print_order_statistics(order_stats)\n",
"print_updated_inventory(current_inventory)\n",
"\n",
"print(\"Success! The order has been processed and the inventory is updated.\")"
]
}
],
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