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302 changes: 302 additions & 0 deletions .ipynb_checkpoints/lab-python-flow-control-checkpoint.ipynb
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{
"cells": [
{
"cell_type": "markdown",
"id": "d3bfc191-8885-42ee-b0a0-bbab867c6f9f",
"metadata": {
"tags": []
},
"source": [
"# Lab | Flow Control"
]
},
{
"cell_type": "markdown",
"id": "3851fcd1-cf98-4653-9c89-e003b7ec9400",
"metadata": {},
"source": [
"## Exercise: Managing Customer Orders Optimized\n",
"\n",
"In the last lab, you were starting an online store that sells various products. To ensure smooth operations, you developed a program that manages customer orders and inventory.\n",
"\n",
"You did so without using flow control. Let's go a step further and improve this code.\n",
"\n",
"Follow the steps below to complete the exercise:\n",
"\n",
"1. Look at your code from the lab data structures, and improve repeated code with loops.\n",
"\n",
"2. Instead of asking the user to input the name of three products that a customer wants to order, do the following:\n",
" \n",
" a. Prompt the user to enter the name of a product that a customer wants to order.\n",
" \n",
" b. Add the product name to the \"customer_orders\" set.\n",
" \n",
" c. Ask the user if they want to add another product (yes/no).\n",
" \n",
" d. Continue the loop until the user does not want to add another product.\n",
"\n",
"3. Instead of updating the inventory by subtracting 1 from the quantity of each product, only do it for the products that were ordered (those in \"customer_orders\")."
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "8da9cdf4-cb3e-424d-b0be-b9a7e252859c",
"metadata": {},
"outputs": [],
"source": [
"#1. Define a list called products that contains the following items: \"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"."
]
},
{
"cell_type": "code",
"execution_count": 1,
"id": "790a6294-0894-4d47-a697-b9a5280e1b53",
"metadata": {},
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"source": [
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "c1991341-2f51-42fb-a0c8-d72274625df3",
"metadata": {},
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"source": [
"#2. Create an empty dictionary called inventory."
]
},
{
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"execution_count": 2,
"id": "1ef80dec-8ba3-4503-b67c-7d972b1ee6ca",
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"source": [
"inventory = {}"
]
},
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"execution_count": null,
"id": "18caaaef-f15a-4a3d-ab79-4f60dffa6a52",
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"source": [
"#3. Ask the user to input the quantity of each product available in the inventory. \n",
"#Use the product names from the products list as keys in the inventory dictionary and assign the respective quantities as values."
]
},
{
"cell_type": "code",
"execution_count": 4,
"id": "a5768d3e-e894-4593-bc62-00d9d8a1c67b",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the quantity of t-shirt: 50\n",
"Enter the quantity of mug: 40\n",
"Enter the quantity of hat: 20\n",
"Enter the quantity of book: 100\n",
"Enter the quantity of keychain: 50\n"
]
}
],
"source": [
"for product in products:\n",
" quantity = int(input(f\"Enter the quantity of {product}: \"))\n",
" inventory[product] = quantity"
]
},
{
"cell_type": "code",
"execution_count": 5,
"id": "050ca8f0-9a6f-4c50-9bb7-6a82cc4fdbc8",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"\n",
"Inventory:\n",
"{'t-shirt': 50, 'mug': 40, 'hat': 20, 'book': 100, 'keychain': 50}\n"
]
}
],
"source": [
"print(\"\\nInventory:\")\n",
"print(inventory)"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "2cabc7df-cd2f-4ac2-868b-6d8e372e20ec",
"metadata": {},
"outputs": [],
"source": [
"#4. Create an empty set called customer_orders."
]
},
{
"cell_type": "code",
"execution_count": 6,
"id": "91465da2-9490-4bb0-b347-ba6c07b3c427",
"metadata": {},
"outputs": [],
"source": [
"customer_orders = set()"
]
},
{
"cell_type": "code",
"execution_count": 7,
"id": "c72e483c-06db-47d9-831d-830a11f1f834",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Enter the name of a product 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): yes\n",
"Enter the name of a product to order: keychain\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"keychain has been added to your order.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Do you want to add another product? (yes/no): yes\n",
"Enter the name of a product to order: mug\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"mug has been added to your order.\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Do you want to add another product? (yes/no): no\n"
]
}
],
"source": [
"while True:\n",
" # Prompt user for product name\n",
" product_name = input(\"Enter the name of a product to order: \").strip().lower()\n",
" \n",
" # Check if the product is in inventory\n",
" if product_name in inventory:\n",
" customer_orders.add(product_name)\n",
" print(f\"{product_name} has been added to your order.\")\n",
" else:\n",
" print(f\"Sorry, {product_name} is not available in the inventory.\")\n",
" \n",
" # Ask if they want to add another product\n",
" another = input(\"Do you want to add another product? (yes/no): \").strip().lower()\n",
" \n",
" if another != 'yes':\n",
" break"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "dee165fd-2973-4f66-b743-54b2e63e10cf",
"metadata": {},
"outputs": [],
"source": [
"# Update inventory for ordered products"
]
},
{
"cell_type": "code",
"execution_count": 8,
"id": "6f75afbc-ffc7-4e22-a20a-18da3bd037d5",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Updated inventory: keychain now has 49 remaining.\n",
"Updated inventory: book now has 99 remaining.\n",
"Updated inventory: mug now has 39 remaining.\n",
"Final customer orders: {'keychain', 'book', 'mug'}\n"
]
}
],
"source": [
"for product in customer_orders:\n",
" if inventory[product] > 0:\n",
" inventory[product] -= 1\n",
" print(f\"Updated inventory: {product} now has {inventory[product]} remaining.\")\n",
" else:\n",
" print(f\"Sorry, {product} is out of stock.\")\n",
"\n",
"print(\"Final customer orders:\", customer_orders)"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "d4d32398-c3a9-4845-82ca-dc67ccc6692a",
"metadata": {},
"outputs": [],
"source": []
}
],
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