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221 changes: 221 additions & 0 deletions lab_python_functions.ipynb
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"# Lab | Functions"
]
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"## 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"
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"# List of products\n",
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
"\n",
"\n",
"# 1. Initialize inventory\n",
"def initialize_inventory(products):\n",
" inventory = {}\n",
"\n",
" for product in products:\n",
" quantity = int(input(f\"Enter the quantity of {product}: \"))\n",
" inventory[product] = quantity\n",
"\n",
" return inventory\n",
"\n",
"\n",
"# 2. Get customer orders\n",
"def get_customer_orders():\n",
" customer_orders = set()\n",
"\n",
" while True:\n",
" product = input(\"Enter the product you want to order: \")\n",
"\n",
" customer_orders.add(product)\n",
"\n",
" another = input(\"Do you want to add another product? (yes/no): \")\n",
"\n",
" if another.lower() == \"no\":\n",
" break\n",
"\n",
" return customer_orders\n",
"\n",
"\n",
"# 3. Update inventory\n",
"def update_inventory(customer_orders, inventory):\n",
"\n",
" for product in customer_orders:\n",
" inventory[product] -= 1\n",
"\n",
" return inventory\n",
"\n",
"\n",
"# 4. Calculate order statistics\n",
"def calculate_order_statistics(customer_orders, products):\n",
"\n",
" total_products_ordered = len(customer_orders)\n",
"\n",
" percentage_ordered = (\n",
" total_products_ordered / len(products)\n",
" ) * 100\n",
"\n",
" return total_products_ordered, percentage_ordered\n",
"\n",
"\n",
"# 5. Print order statistics\n",
"def print_order_statistics(order_statistics):\n",
"\n",
" total_products_ordered, percentage_ordered = order_statistics\n",
"\n",
" print(\"Total products ordered:\", total_products_ordered)\n",
" print(\"Percentage of unique products ordered:\", percentage_ordered, \"%\")\n",
"\n",
"\n",
"# 6. Print updated inventory\n",
"def print_updated_inventory(inventory):\n",
"\n",
" print(\"Updated inventory:\")\n",
"\n",
" for product, quantity in inventory.items():\n",
" print(product, \":\", quantity)\n",
"\n",
"\n",
"# 7. Call the functions in sequence\n",
"\n",
"inventory = initialize_inventory(products)\n",
"\n",
"customer_orders = get_customer_orders()\n",
"\n",
"inventory = update_inventory(customer_orders, inventory)\n",
"\n",
"order_statistics = calculate_order_statistics(\n",
" customer_orders,\n",
" products\n",
")\n",
"\n",
"print_order_statistics(order_statistics)\n",
"\n",
"print_updated_inventory(inventory)"
],
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"Enter the quantity of t-shirt: 10\n",
"Enter the quantity of mug: 20\n",
"Enter the quantity of hat: 30\n",
"Enter the quantity of book: 40\n",
"Enter the quantity of keychain: 50\n",
"Enter the product you want to order: mug\n",
"Do you want to add another product? (yes/no): yes\n",
"Enter the product you want to order: hat\n",
"Do you want to add another product? (yes/no): no\n",
"Total products ordered: 2\n",
"Percentage of unique products ordered: 40.0 %\n",
"Updated inventory:\n",
"t-shirt : 10\n",
"mug : 19\n",
"hat : 29\n",
"book : 40\n",
"keychain : 50\n"
]
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