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321 changes: 321 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": 2,
"id": "3088a610-0510-4849-82e3-884a8be5bb71",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the quantity of t-shirts available: 5\n",
"Enter the quantity of mugs available: 5\n",
"Enter the quantity of hats available: 5\n",
"Enter the quantity of books available: 5\n",
"Enter the quantity of keychains available: 5\n"
]
}
],
"source": [
"#1\n",
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
"inventory = {product: int(input(f\"Enter the quantity of {product}s available: \")) for product in products}\n"
]
},
{
"cell_type": "code",
"execution_count": 5,
"id": "b88c0ca8-8440-4918-98c7-12aaf57c08a9",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the number of customer orders: 3\n",
"Enter the name of product 1 to order: hat\n",
"Enter the name of product 2 to order: mug\n",
"Enter the name of product 3 to order: book\n"
]
}
],
"source": [
"#2\n",
"num_orders = int(input(\"Enter the number of customer orders: \"))\n",
"customer_orders = {input(f\"Enter the name of product {i + 1} to order: \") for i in range(num_orders)}\n"
]
},
{
"cell_type": "code",
"execution_count": 8,
"id": "abd9de57-158f-4a36-b59b-2b9ba2b3751b",
"metadata": {},
"outputs": [],
"source": [
"#3\n",
"def calculate_total_price(customer_orders):\n",
" return sum(float(input(f\"Enter the price of {item}: \")) for item in customer_orders)\n",
" "
]
},
{
"cell_type": "code",
"execution_count": 10,
"id": "05fd9d53-dce3-42cb-a1b9-501616eac0c6",
"metadata": {},
"outputs": [],
"source": [
"#4\n",
"def update_inventory(inventory, customer_orders):\n",
" for item in customer_orders:\n",
" if item in inventory:\n",
" inventory[item] -= 1\n",
" return {item: qty for item, qty in inventory.items() if qty > 0}\n"
]
},
{
"cell_type": "code",
"execution_count": 12,
"id": "233cd2b0-f755-448c-8231-567c2a184227",
"metadata": {},
"outputs": [],
"source": [
"#5\n",
"def calculate_order_statistics(customer_orders, products):\n",
" total_products_ordered = len(customer_orders)\n",
" percentage_ordered = (total_products_ordered / len(products)) * 100\n",
" return total_products_ordered, percentage_ordered\n",
"\n"
]
},
{
"cell_type": "code",
"execution_count": 13,
"id": "7227ce44-bbaa-45d9-952b-dcca68c5e220",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the quantity of t-shirts available: 5\n",
"Enter the quantity of mugs available: 4\n",
"Enter the quantity of hats available: 6\n",
"Enter the quantity of books available: 5\n",
"Enter the quantity of keychains available: 5\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: book\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"\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: 5\n",
"book: 4\n",
"keychain: 5\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the price of hat: 200\n",
"Enter the price of book: 100\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"\n",
"Total Price: 300.00\n"
]
}
],
"source": [
"# --- Step 1: Initialize global product list ---\n",
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
"\n",
"\n",
"# --- Step 1: Initialize inventory using dictionary comprehension ---\n",
"def initialize_inventory(products):\n",
" return {product: int(input(f\"Enter the quantity of {product}s available: \")) for product in products}\n",
"\n",
"\n",
"# --- Step 2: Get customer orders using set comprehension ---\n",
"def get_customer_orders(products):\n",
" num_orders = int(input(\"Enter the number of customer orders: \"))\n",
" return {\n",
" prod\n",
" for i in range(num_orders)\n",
" if (prod := input(f\"Enter the name of a product that a customer wants to order: \")) in products\n",
" }\n",
"\n",
"\n",
"# --- Step 3: Calculate total price using comprehension ---\n",
"# (assumes 1 unit per product)\n",
"def calculate_total_price(customer_orders):\n",
" return sum(float(input(f\"Enter the price of {item}: \")) for item in customer_orders)\n",
"\n",
"\n",
"# --- Step 4: Update inventory using comprehension and filter out zero-quantity items ---\n",
"def update_inventory(inventory, customer_orders):\n",
" return {\n",
" item: qty - (1 if item in customer_orders else 0)\n",
" for item, qty in inventory.items()\n",
" if qty - (1 if item in customer_orders else 0) > 0\n",
" }\n",
"\n",
"\n",
"# --- Step 5: Calculate and print order statistics ---\n",
"def calculate_order_statistics(customer_orders, products):\n",
" total_products_ordered = len(customer_orders)\n",
" percentage_ordered = (total_products_ordered / len(products)) * 100\n",
" return total_products_ordered, percentage_ordered\n",
"\n",
"\n",
"def print_order_statistics(stats):\n",
" print(\"\\nOrder Statistics:\")\n",
" print(f\"Total Products Ordered: {stats[0]}\")\n",
" print(f\"Percentage of Unique Products Ordered: {stats[1]:.1f}%\")\n",
"\n",
"\n",
"def print_updated_inventory(inventory):\n",
" print(\"\\nUpdated Inventory:\")\n",
" for item, qty in inventory.items():\n",
" print(f\"{item}: {qty}\")\n",
"\n",
"\n",
"# --- Main Program Flow ---\n",
"inventory = initialize_inventory(products)\n",
"customer_orders = get_customer_orders(products)\n",
"\n",
"updated_inventory = update_inventory(inventory, customer_orders)\n",
"stats = calculate_order_statistics(customer_orders, products)\n",
"\n",
"print_order_statistics(stats)\n",
"print_updated_inventory(updated_inventory)\n",
"\n",
"total_price = calculate_total_price(customer_orders)\n",
"print(f\"\\nTotal Price: {total_price:.2f}\")"
]
},
{
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"execution_count": null,
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}
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