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My feature #491

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6360d2b
Solved customer orders exercise with functions
abhishekrahul93 Sep 21, 2025
63b42d6
Solved lab: customer orders with functions
abhishekrahul93 Sep 21, 2025
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350 changes: 350 additions & 0 deletions .ipynb_checkpoints/lab-python-functions-checkpoint.ipynb
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{
"cells": [
{
"cell_type": "markdown",
"id": "25d7736c-ba17-4aff-b6bb-66eba20fbf4e",
"metadata": {},
"source": [
"# Lab | Functions"
]
},
{
"cell_type": "markdown",
"id": "0c581062-8967-4d93-b06e-62833222f930",
"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": 2,
"id": "a0e25348-319a-4b12-95fe-5f609482646f",
"metadata": {},
"outputs": [],
"source": [
"# Step 1: Initialize inventory\n",
"def initialize_inventory(products):\n",
" inventory = {}\n",
" for product in products:\n",
" quantity = int(input(f\"Enter quantity for {product}: \"))\n",
" inventory[product] = quantity\n",
" return inventory"
]
},
{
"cell_type": "code",
"execution_count": 4,
"id": "be4e90b8-e93d-4b6b-941c-4a1fee50e47b",
"metadata": {},
"outputs": [],
"source": [
"# Step 2: Get customer orders\n",
"def get_customer_orders():\n",
" customer_orders = set()\n",
" while True:\n",
" order = input(\"Enter a product to order (or 'done' to finish): \").strip()\n",
" if order.lower() == \"done\":\n",
" break\n",
" customer_orders.add(order)\n",
" return customer_orders"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "053743fe-45b6-4ec7-b001-6c4be5cee5a3",
"metadata": {},
"outputs": [],
"source": [
"def update_inventory(customer_orders, inventory):\n",
" for order in customer_orders:\n",
" if order in inventory and inventory[order] > 0:\n",
" inventory[order] -= 1\n",
" else:\n",
" print(f\"Sorry, {order} is not available or out of stock.\")\n",
" return inventory"
]
},
{
"cell_type": "code",
"execution_count": 5,
"id": "8bc7c17b-91db-4ab6-bf6e-df64e6aee751",
"metadata": {},
"outputs": [],
"source": [
"# Step 4: Calculate order statistics\n",
"def calculate_order_statistics(customer_orders, products):\n",
" total_products_ordered = len(customer_orders)\n",
" percentage_unique = (len(customer_orders) / len(products)) * 100\n",
" return total_products_ordered, percentage_unique"
]
},
{
"cell_type": "code",
"execution_count": 6,
"id": "e8570722-9eae-494c-bcc1-2f9936ef4b10",
"metadata": {},
"outputs": [],
"source": [
"# Step 5: Print order statistics\n",
"def print_order_statistics(order_statistics):\n",
" total, percentage = order_statistics\n",
" print(\"\\nOrder Statistics:\")\n",
" print(f\"Total unique products ordered: {total}\")\n",
" print(f\"Percentage of available products ordered: {percentage:.2f}%\")"
]
},
{
"cell_type": "code",
"execution_count": 7,
"id": "bb510941-b885-4e2c-bcb9-bbcd7e658a17",
"metadata": {},
"outputs": [],
"source": [
"# Step 6: Print updated inventory\n",
"def print_updated_inventory(inventory):\n",
" print(\"\\nUpdated Inventory:\")\n",
" for product, quantity in inventory.items():\n",
" print(f\"{product}: {quantity}\")"
]
},
{
"cell_type": "code",
"execution_count": 8,
"id": "46e4aca3-d5a7-4e28-b546-585f6191f017",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter quantity for apple: 20\n",
"Enter quantity for banana: 12\n",
"Enter quantity for orange: 24\n",
"Enter quantity for grape: 30\n",
"Enter a product to order (or 'done' to finish): bnana\n",
"Enter a product to order (or 'done' to finish): orange\n",
"Enter a product to order (or 'done' to finish): papaya\n",
"Enter a product to order (or 'done' to finish): grape\n",
"Enter a product to order (or 'done' to finish): pple\n",
"Enter a product to order (or 'done' to finish): done\n"
]
},
{
"ename": "NameError",
"evalue": "name 'update_inventory' is not defined",
"output_type": "error",
"traceback": [
"\u001b[31m---------------------------------------------------------------------------\u001b[39m",
"\u001b[31mNameError\u001b[39m Traceback (most recent call last)",
"\u001b[36mCell\u001b[39m\u001b[36m \u001b[39m\u001b[32mIn[8]\u001b[39m\u001b[32m, line 5\u001b[39m\n\u001b[32m 3\u001b[39m inventory = initialize_inventory(products)\n\u001b[32m 4\u001b[39m customer_orders = get_customer_orders()\n\u001b[32m----> \u001b[39m\u001b[32m5\u001b[39m inventory = \u001b[43mupdate_inventory\u001b[49m(customer_orders, inventory)\n\u001b[32m 6\u001b[39m order_stats = calculate_order_statistics(customer_orders, products)\n\u001b[32m 8\u001b[39m print_order_statistics(order_stats)\n",
"\u001b[31mNameError\u001b[39m: name 'update_inventory' is not defined"
]
}
],
"source": [
"print_updated_inventory(inventory)"
]
},
{
"cell_type": "code",
"execution_count": 10,
"id": "7c8cdd69-8854-42c2-806d-bac027fd7167",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter quantity for apple: 30\n",
"Enter quantity for banana: 24\n",
"Enter quantity for orange: 22\n",
"Enter quantity for grape: 21\n",
"Enter a product to order (or 'done' to finish): grapes\n",
"Enter a product to order (or 'done' to finish): orange\n",
"Enter a product to order (or 'done' to finish): done\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Sorry, grapes is not available or out of stock.\n",
"\n",
"Order Statistics:\n",
"Total unique products ordered: 2\n",
"Percentage of available products ordered: 50.00%\n",
"\n",
"Updated Inventory:\n",
"apple: 30\n",
"banana: 24\n",
"orange: 21\n",
"grape: 21\n"
]
}
],
"source": [
"# ----------------------------\n",
"# Function Definitions\n",
"# ----------------------------\n",
"\n",
"# Initialize inventory\n",
"def initialize_inventory(products):\n",
" inventory = {}\n",
" for product in products:\n",
" quantity = int(input(f\"Enter quantity for {product}: \"))\n",
" inventory[product] = quantity\n",
" return inventory\n",
"\n",
"# Get customer orders\n",
"def get_customer_orders():\n",
" customer_orders = set()\n",
" while True:\n",
" order = input(\"Enter a product to order (or 'done' to finish): \").strip()\n",
" if order.lower() == \"done\":\n",
" break\n",
" customer_orders.add(order)\n",
" return customer_orders\n",
"\n",
"# Update inventory\n",
"def update_inventory(customer_orders, inventory):\n",
" for order in customer_orders:\n",
" if order in inventory and inventory[order] > 0:\n",
" inventory[order] -= 1\n",
" else:\n",
" print(f\"Sorry, {order} is not available or out of stock.\")\n",
" return inventory\n",
"\n",
"# Calculate order statistics\n",
"def calculate_order_statistics(customer_orders, products):\n",
" total_products_ordered = len(customer_orders)\n",
" percentage_unique = (len(customer_orders) / len(products)) * 100\n",
" return total_products_ordered, percentage_unique\n",
"\n",
"# Print order statistics\n",
"def print_order_statistics(order_statistics):\n",
" total, percentage = order_statistics\n",
" print(\"\\nOrder Statistics:\")\n",
" print(f\"Total unique products ordered: {total}\")\n",
" print(f\"Percentage of available products ordered: {percentage:.2f}%\")\n",
"\n",
"# Print updated inventory\n",
"def print_updated_inventory(inventory):\n",
" print(\"\\nUpdated Inventory:\")\n",
" for product, quantity in inventory.items():\n",
" print(f\"{product}: {quantity}\")\n",
"\n",
"# ----------------------------\n",
"# Main Program\n",
"# ----------------------------\n",
"\n",
"products = [\"apple\", \"banana\", \"orange\", \"grape\"]\n",
"\n",
"inventory = initialize_inventory(products)\n",
"customer_orders = get_customer_orders()\n",
"inventory = update_inventory(customer_orders, inventory)\n",
"order_stats = calculate_order_statistics(customer_orders, products)\n",
"\n",
"print_order_statistics(order_stats)\n",
"print_updated_inventory(inventory)\n"
]
},
{
"cell_type": "code",
"execution_count": 11,
"id": "2c086c63-c21b-47bb-9877-2defb194e0ee",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter quantity for apple: 2\n",
"Enter quantity for banana: 4\n",
"Enter quantity for orange: 6\n",
"Enter quantity for grape: 8\n",
"Enter a product to order (or 'done' to finish): done\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"\n",
"Order Statistics:\n",
"Total unique products ordered: 0\n",
"Percentage of available products ordered: 0.00%\n"
]
}
],
"source": [
"products = [\"apple\", \"banana\", \"orange\", \"grape\"]\n",
"\n",
"inventory = initialize_inventory(products)\n",
"customer_orders = get_customer_orders()\n",
"inventory = update_inventory(customer_orders, inventory)\n",
"order_stats = calculate_order_statistics(customer_orders, products)\n",
"\n",
"print_order_statistics(order_stats)\n"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "59dec4a3-8278-47f8-b7a5-710c7bdc4ebd",
"metadata": {},
"outputs": [],
"source": []
}
],
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"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"language": "python",
"name": "python3"
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"language_info": {
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