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287 changes: 287 additions & 0 deletions .ipynb_checkpoints/lab-python-flow-control-checkpoint.ipynb
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"# Lab | Flow Control"
]
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"## 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\")."
]
},
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"cell_type": "code",
"execution_count": 8,
"id": "22627c81-d06a-4ee4-84b4-8e44e8f0d2a9",
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"name": "stdin",
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"text": [
"Please input the amount of t-shirts: 50\n",
"Please input the amount of mugs: 20\n",
"Please input the amount of hats: 30\n",
"Please input the amount of books: 10\n",
"Please input the amount of keychains: 5\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"The total number of items in stock is: 115\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Please input the product you wish to order: keychain\n",
"Please input the product you wish to order: hat\n",
"Please input the product you wish to order: belt\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Sorry, we don't have that!\n"
]
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"source": [
"# 1. Look at your code from the lab data structures, and improve repeated code with loops.\n",
"\n",
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
"inventory = {}\n",
"for product in products:\n",
" amount = int(input(f\"Please input the amount of {product}s: \"))\n",
" inventory[product] = amount \n",
"total_items = sum(inventory.values())\n",
"print(f\"The total number of items in stock is: {total_items}\")\n",
"\n",
"customer_orders = set()\n",
"for product in range(3):\n",
" orders = input(f\"Please input the product you wish to order:\")\n",
" if orders in products:\n",
" customer_orders.add(orders)\n",
" else:\n",
" print(\"Sorry, we don't have that!\")\n",
" "
]
},
{
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"execution_count": 44,
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"name": "stdin",
"output_type": "stream",
"text": [
"Please enter the name of a product you wish to order: belt\n"
]
}
],
"source": [
"# 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",
"customer_wish = input(\"Please enter the name of a product you wish to order:\")\n"
]
},
{
"cell_type": "code",
"execution_count": 46,
"id": "897a1c12-279a-4bdd-99ed-87fc2a30b0d9",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"{'keychain', 't-shirt', 'mug', 'book', 'hat', 'belt'}\n"
]
}
],
"source": [
"# b. Add the product name to the \"customer_orders\" set.\n",
"\n",
"customer_orders.add(customer_wish)\n",
"print(customer_orders)\n"
]
},
{
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"id": "f5b20b75-ee17-4e0a-86cf-aba1ed43b1bc",
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{
"name": "stdin",
"output_type": "stream",
"text": [
"Do you wish to add another product to this order? (yes/no) Yes\n"
]
}
],
"source": [
"# c. Ask the user if they want to add another product (yes/no).\n",
"\n",
"user_product_add = input(\"Do you wish to add another product to this order? (yes/no)\")"
]
},
{
"cell_type": "code",
"execution_count": 29,
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"name": "stdin",
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"text": [
"Do you wish to add another product to this order? (yes/no): yes\n",
"Enter product: mug\n",
"Do you wish to add another product? (yes/no): yes\n",
"Enter product: keychain\n",
"Do you wish to add another product? (yes/no): no\n"
]
}
],
"source": [
"# d. Continue the loop until the user does not want to add another product.\n",
"\n",
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
"\n",
"add_product = input(\"Do you wish to add another product to this order? (yes/no):\")\n",
"while add_product.lower() == \"yes\":\n",
" input(\"Enter product: \")\n",
" add_product = input(\"Do you wish to add another product? (yes/no): \")\n",
"\n"
]
},
{
"cell_type": "code",
"execution_count": 53,
"id": "caf65903-9531-499c-96e9-8adcb25012bd",
"metadata": {},
"outputs": [
{
"name": "stdin",
"output_type": "stream",
"text": [
"Please input the amount of t-shirts: 50\n",
"Please input the amount of mugs: 10\n",
"Please input the amount of hats: 20\n",
"Please input the amount of books: 100\n",
"Please input the amount of keychains: 80\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"The total number of items in stock is: 260\n"
]
},
{
"name": "stdin",
"output_type": "stream",
"text": [
"Please input the product you wish to order: book\n",
"Please input the product you wish to order: mug\n",
"Please input the product you wish to order: hat\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"Updated mug: 9 remaining.\n",
"Updated hat: 19 remaining.\n",
"Updated book: 99 remaining.\n"
]
}
],
"source": [
"# 3. Instead of updating the inventory by subtracting 1 from the quantity of each product,\n",
"# only do it for the products that were ordered (those in \"customer_orders\").\n",
"\n",
"products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
"inventory = {}\n",
"for product in products:\n",
" amount = int(input(f\"Please input the amount of {product}s: \"))\n",
" inventory[product] = amount \n",
"total_items = sum(inventory.values())\n",
"print(f\"The total number of items in stock is: {total_items}\")\n",
"\n",
"customer_orders = set()\n",
"for product in range(3):\n",
" orders = input(f\"Please input the product you wish to order:\")\n",
" if orders in products:\n",
" customer_orders.add(orders)\n",
" else:\n",
" print(\"Sorry, we don't have that!\")\n",
" \n",
"for product in customer_orders:\n",
" if product in inventory:\n",
" inventory[product] -= 1\n",
" print(f\"Updated {product}: {inventory[product]} remaining.\")\n",
" "
]
}
],
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