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lab work for list, set, and dic comprehension #346

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293 changes: 293 additions & 0 deletions .ipynb_checkpoints/lab-python-list-comprehension-checkpoint.ipynb
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{
"cells": [
{
"cell_type": "markdown",
"id": "25d7736c-ba17-4aff-b6bb-66eba20fbf4e",
"metadata": {},
"source": [
"# Lab | List, Dict and Set Comprehension"
]
},
{
"cell_type": "markdown",
"id": "7dd3cbde-675a-4b81-92c3-f728846dbe06",
"metadata": {},
"source": [
"## Exercise: Managing Customer Orders Optimized with Comprehension"
]
},
{
"cell_type": "markdown",
"id": "5d500160-2fb7-4777-b5e4-09d45ebaf328",
"metadata": {},
"source": [
"In the previous exercise, you developed a program to manage customer orders and inventory. Now, let's take it a step further and incorporate comprehension into your code.\n",
"\n",
"Follow the steps below to complete the exercise:\n",
"\n",
"1. Review your code from the previous exercise and identify areas where you can apply comprehension to simplify and streamline your code. \n",
"\n",
" - *Hint: Apply it to initialize inventory, updating the inventory and printing the updated inventory.*\n",
" \n",
" - For example, in initializing the inventory, we could have:\n",
" \n",
" ```python\n",
" def initialize_inventory(products):\n",
" inventory = {product: int(input(f\"Enter the quantity of {product}s available: \")) for product in products}\n",
" return inventory\n",
"\n",
" ```\n",
"<br>\n",
" \n",
" \n",
"2. Modify the function get_customer_orders so it prompts the user to enter the number of customer orders and gathers the product names using a loop and user input. Use comprehension.\n",
"\n",
"3. Add a new function to calculate the total price of the customer order. For each product in customer_orders, prompt the user to enter the price of that product. Use comprehension to calculate the total price. Note: assume that the user can only have 1 unit of each product.\n",
"\n",
"4. Modify the update_inventory function to remove the product from the inventory if its quantity becomes zero after fulfilling the customer orders. Use comprehension to filter out the products with a quantity of zero from the inventory.\n",
"\n",
"5. Print the total price of the customer order.\n",
"\n",
"Your code should produce output similar to the following:\n",
"\n",
"```python\n",
"Enter the quantity of t-shirts available: 5\n",
"Enter the quantity of mugs available: 4\n",
"Enter the quantity of hats available: 3\n",
"Enter the quantity of books available: 2\n",
"Enter the quantity of keychains available: 1\n",
"Enter the number of customer orders: 2\n",
"Enter the name of a product that a customer wants to order: hat\n",
"Enter the name of a product that a customer wants to order: keychain\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: 4\n",
"hat: 2\n",
"book: 2\n",
"Enter the price of keychain: 5\n",
"Enter the price of hat: 10\n",
"Total Price: 15.0\n",
"\n",
"```\n"
]
},
{
"cell_type": "code",
"execution_count": 1,
"id": "8b14e667-c604-40a6-86bc-0d0305a9d885",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the name of a product that a customer wants to order: book\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"book has been added to your order.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Do you want to add another product? (yes/no): no\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"One book has been deducted from the inventory.\n",
"\n",
"Updated inventory:\n",
"Book: 9\n",
"Hat: 15\n",
"Keychain: 8\n",
"T-shirt: 5\n",
"Mug: 3\n"
]
}
],
"source": [
"# Sample inventory data (for demonstration)\n",
"inventory = {\n",
" \"book\": 10,\n",
" \"hat\": 15,\n",
" \"keychain\": 8,\n",
" \"t-shirt\": 5,\n",
" \"mug\": 3\n",
"}\n",
"\n",
"# Set to store customer orders (no duplicates allowed)\n",
"customer_orders = set()\n",
"\n",
"# Step a, b, c, and d: Add products to the customer order\n",
"while True:\n",
" product = input(\"Enter the name of a product that a customer wants to order: \").strip().lower()\n",
" # Add the product to the set of customer orders\n",
" if product in inventory: # Ensure the product is in the inventory\n",
" customer_orders.add(product)\n",
" print(f\"{product} has been added to your order.\")\n",
" else:\n",
" print(f\"Sorry, we don't have {product} in the inventory.\")\n",
"\n",
" # Ask if the customer wants to add another product\n",
" another_product = input(\"Do you want to add another product? (yes/no): \").strip().lower()\n",
" if another_product != 'yes':\n",
" break\n",
"\n",
"# Step to update the inventory based on the customer orders\n",
"for ordered_product in customer_orders:\n",
" if ordered_product in inventory and inventory[ordered_product] > 0:\n",
" inventory[ordered_product] -= 1\n",
" print(f\"One {ordered_product} has been deducted from the inventory.\")\n",
" else:\n",
" print(f\"Sorry, {ordered_product} is out of stock or not available.\")\n",
"\n",
"# Final inventory state\n",
"print(\"\\nUpdated inventory:\")\n",
"for product, quantity in inventory.items():\n",
" print(f\"{product.capitalize()}: {quantity}\")\n"
]
},
{
"cell_type": "code",
"execution_count": 3,
"id": "0d93d1b1-8f2f-4343-98b2-d43e2d0f640d",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the quantity of books available: 9\n",
"Enter the quantity of hats available: 15\n",
"Enter the quantity of t-shirts available: 5\n",
"Enter the quantity of mugs available: 3\n",
"Enter the quantity of keychains available: 8\n",
"Enter the product you want to order: keychain\n",
"Would you like to add another product? (yes/no): yes\n",
"Enter the product you want to order: hat\n",
"Would you like to add another product? (yes/no): no\n",
"Enter the price of keychain: 100\n",
"Enter the price of hat: 50\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"\n",
"Customer's Orders:\n",
"- Keychain\n",
"- Hat\n",
"\n",
"Total Price: $150.00\n",
"\n",
"Updated Inventory:\n",
"Book: 9\n",
"Hat: 14\n",
"T-shirt: 5\n",
"Mug: 3\n",
"Keychain: 7\n"
]
}
],
"source": [
"def initialize_inventory(products):\n",
" # Using dictionary comprehension to initialize inventory\n",
" return {product: int(input(f\"Enter the quantity of {product}s available: \")) for product in products}\n",
"\n",
"def get_customer_orders():\n",
" # Gather orders using a list comprehension: ask user for product names until 'no'\n",
" orders = []\n",
" while True:\n",
" product = input(\"Enter the product you want to order: \").lower()\n",
" orders.append(product) # Add the product to the orders list\n",
" another = input(\"Would you like to add another product? (yes/no): \").lower()\n",
" if another != \"yes\":\n",
" break\n",
" return orders\n",
"\n",
"def calculate_total_price(customer_orders):\n",
" # Using comprehension to get the price of each product and calculate the total price\n",
" return sum([float(input(f\"Enter the price of {product}: \")) for product in customer_orders])\n",
"\n",
"def update_inventory(inventory, customer_orders):\n",
" # Using dictionary comprehension to update inventory and filter out products with zero stock\n",
" for product in customer_orders:\n",
" if product in inventory and inventory[product] > 0:\n",
" inventory[product] -= 1\n",
" \n",
" # Filter products with zero stock from the inventory\n",
" inventory = {product: qty for product, qty in inventory.items() if qty > 0}\n",
" return inventory\n",
"\n",
"# List of products available in the store (can be predefined or extended by the user)\n",
"products = [\"book\", \"hat\", \"t-shirt\", \"mug\", \"keychain\"]\n",
"\n",
"# Initialize the inventory\n",
"inventory = initialize_inventory(products)\n",
"\n",
"# Get customer orders using comprehension\n",
"customer_orders = get_customer_orders()\n",
"\n",
"# Calculate total price of the customer order\n",
"total_price = calculate_total_price(customer_orders)\n",
"\n",
"# Update inventory after fulfilling the customer orders\n",
"inventory = update_inventory(inventory, customer_orders)\n",
"\n",
"# Display the customer orders and updated inventory\n",
"print(\"\\nCustomer's Orders:\")\n",
"for product in customer_orders:\n",
" print(f\"- {product.capitalize()}\")\n",
"\n",
"print(f\"\\nTotal Price: ${total_price:.2f}\")\n",
"\n",
"print(\"\\nUpdated Inventory:\")\n",
"for product, quantity in inventory.items():\n",
" print(f\"{product.capitalize()}: {quantity}\")\n"
]
},
{
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