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280 changes: 280 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": 12,
"id": "689cbc7c-09f9-4d92-bacd-77fbe03e91e3",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the quantity of t-shirts available: 10\n",
"Enter the quantity of mugs available: 5\n",
"Enter the quantity of hats available: 10\n",
"Enter the quantity of books available: 10\n",
"Enter the quantity of keychains available: 10\n"
]
}
],
"source": [
"#1\n",
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
"inventory = {}\n",
"\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",
"inventory = initialize_inventory(products)\n"
]
},
{
"cell_type": "code",
"execution_count": 14,
"id": "8234cf71-7e06-4323-ab59-d65d8c9cd709",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the number of customer orders: 3\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",
"Enter the name of a product that a customer wants to order: keychain\n"
]
}
],
"source": [
"#2. Modify the function get_customer_orders so it prompts the user to enter the number of customer orders \n",
"# and gathers the product names using a loop and user input. Use comprehension.\n",
"\n",
"def get_customer_orders():\n",
" num_orders = int(input(\"Enter the number of customer orders:\"))\n",
" customer_orders = {input(\"Enter the name of a product that a customer wants to order: \"): 1 for i in range(num_orders)}\n",
" return customer_orders\n",
"\n",
"customer_orders = get_customer_orders()"
]
},
{
"cell_type": "code",
"execution_count": 24,
"id": "4b9aadc2-434e-4cf2-9987-c4c01f9412f8",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Total products ordered: 3\n",
"Percentage of unique products ordered: 60.00%\n"
]
},
{
"data": {
"text/plain": [
"(3, 60.0)"
]
},
"execution_count": 24,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"def calculate_order_statistics(customer_orders, products):\n",
" total_products_ordered = sum(customer_orders.values()) \n",
" unique_products_ordered = len(customer_orders) \n",
" total_unique_products = len(products) \n",
" \n",
" percentage_unique = (unique_products_ordered / total_unique_products) * 100\n",
"\n",
" print(f\"Total products ordered: {total_products_ordered}\")\n",
" print(f\"Percentage of unique products ordered: {percentage_unique:.2f}%\")\n",
"\n",
" return total_products_ordered, percentage_unique\n",
"\n",
"\n",
"calculate_order_statistics(customer_orders, products)"
]
},
{
"cell_type": "code",
"execution_count": 26,
"id": "fe575a6b-b160-429e-aa62-7801693c1db4",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Updated inventory: \n",
"{'t-shirt': 10, 'mug': 5, 'hat': 7, 'book': 7, 'keychain': 7}\n"
]
}
],
"source": [
"#3. Add a new function to calculate the total price of the customer order. For each product in customer_orders, \n",
"# prompt the user to enter the price of that product. \n",
"# Use comprehension to calculate the total price. Note: assume that the user can only have 1 unit of each product.\n",
"\n",
"def update_inventory(customer_orders, inventory):\n",
" inventory = {item: (inventory[item] - 1) if item in customer_orders else inventory[item] for item in inventory}\n",
" print(f\"Updated inventory: \\n{inventory}\")\n",
"\n",
"inventory = update_inventory(customer_orders, inventory)"
]
},
{
"cell_type": "code",
"execution_count": 32,
"id": "6826bec6-7218-4526-8176-9f60b5103eb6",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the price of hats: 10\n",
"Enter the price of books: 5\n",
"Enter the price of keychains: 10\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Total Price: 25\n"
]
},
{
"data": {
"text/plain": [
"25"
]
},
"execution_count": 32,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"def total_price(customer_orders):\n",
" item_prices = {order: int(input(f\"Enter the price of {order}s: \")) for order in customer_orders}\n",
" total_cost = sum(item_prices.values())\n",
" print(f\"Total Price: {total_cost}\")\n",
" return total_cost\n",
"\n",
"total_price(customer_orders)"
]
},
{
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"execution_count": null,
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"metadata": {},
"outputs": [],
"source": []
}
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