python code 18
Project 2: Grocery List
Introduction
Your task for this project is to create a very simple grocery list script. This script also emphasizes the importance of using lists, dictionaries and loop types within your script and how the use of those functions shapes your approach in creating a script.
The task is broken down into three sections:
User Input
Loop through the grocery list
Provide output to the console
Data Structure
The structure of the data for this project is extremely important.
Each grocery item is a dictionary with the following key-value pairs
a name of the grocery item with the key identifier ‘name’
the number of grocery items purchased with the key identifier ‘number’
the cost of the grocery item with the key identifier ‘price’
{‘name’: ‘milk’, ‘number’: int(1), ‘price’: float(2.99)}
grocery_history is a list of grocery item dictionary elements.
The following is an example of initializing a list with items:
grocery_history=[{‘name’: ‘milk’, ‘number’: int(1), ‘price’: float(2.99)},_x000D_
{‘name’: ‘eggs’, ‘number’: 2, ‘price’: 3.99},_x000D_
{‘name’: ‘onions’, ‘number’: 4, ‘price’: 0.79}]_x000D_
Task: Create the empty data structure
Create an empty dictionary with the variable name grocery_item
Create an empty grocery_history list
Control Structure
The variable stop will be used with a while loop to check if the loop condition is true (and the loop will continue) or if the loop condition is false (and the loop will exit).
In this script, the loop will end when the user enters ‘qâ€
As the code in the while loop should run at least once, set the stop variable to anything other that ‘qâ€, e.g. ‘go’ or True
stop = ‘go’
Write a loop that will be used to collect user input.
The While loop will use the
stop variable to determine if the user has completed entering their grocery items.
The following steps will all be completed if the loop condition is met (i.e., the user has not entered ‘q’):
Accept input of the name of the grocery item purchased.Prompt: “Item name:n”Variable: item_name
Accept input of the quantity of the grocery item purchased.Prompt: “Quantity purchased:n”Variable: quantity
Accept input of the cost of the grocery item input (this is a per-item cost).Prompt: “Price per item:n”Variable: cost
Create a dictionary entry in the loop which contains the name, number and price entered by the user. Assign the entry to a variable named grocery_item
The format will be:
{‘name’:item_name, ‘number’: int(quantity), ‘price’: float(cost)}
Add the grocery_item to the grocery_history list using the append function
Prompt the user for input asking if they have finished entering grocery items. Use the prompt:“Would you like to enter another item?nType ‘c’ for continue or ‘q’ to quit:n”
Looping Through the List
In this section, you will loop through the grocery_history list. For each item, you will:
Print the number of that item purchased
Print the name of the item
Print the price paid for all of those items purchased
Add this price to the grand total for the entire list
Your results will look similar to this:
2 apple @ $1.49 ea $2.98_x000D_
1 milk @ $3.99 ea $3.99_x000D_
Grand total: $6.97_x000D_
_x000D_
_x000D_
Print the List
Define variable to hold grand total called grand_total
Define a ‘for’ loop. This loop will examine each element in the grocery_history list.The loop will use the ‘for in’ convention. Each grocery_history list element will be assigned to a variable named ‘grocery_item’
Inside the for loop:
Calculate the total cost for the grocery_item.The calculation is:item_total = number * price
Add the item_total to the grand_total
Output the information for the grocery item to match this example:
Output →
2
apple
@
$1.49
ea
$2.98
Variable →
number
name
price
item_total
Reminder
Your can use the %.2f formatting expression to format the dollar amounts
Set the item_total equal to 0
Finally, after printing all the items, print the grand total!
”’
The task is broken down into three sections.
Section 1 – User Input
Section 2 – loop through the grocery list
Section 3 – provide output to the console
”’
#Task: Create the empty data structure
grocery_item = ?
grocery_history = ?
#Variable used to check if the while loop condition is met
stop = ‘go’
while ?????? :
#Accept input of the name of the grocery item purchased.
#Accept input of the quantity of the grocery item purchased.
#Accept input of the cost of the grocery item input (this is a per-item cost).
#Using the update function to create a dictionary entry which contains the name, number and price entered by the user.
#Add the grocery_item to the grocery_history list using the append function
#Accept input from the user asking if they have finished entering grocery items.
# Define variable to hold grand total called ‘grand_total’
#Define a ‘for’ loop.
for ??????? in ?????????:
#Calculate the total cost for the grocery_item.
#Add the item_total to the grand_total
#Output the information for the grocery item to match this example:
#2 apple @ $1.49 ea $2.98
#Set the item_total equal to 0
#Print the grand total
Do you need a similar assignment done for you from scratch? We have qualified writers to help you. We assure you an A+ quality paper that is free from plagiarism. Order now for an Amazing Discount! Use Discount Code “Newclient” for a 15% Discount!NB: We do not resell papers. Upon ordering, we do an original paper exclusively for you.
The post python code 18 appeared first on Superb Professors.
For any questions, feedback, or comments, we have an ethical customer support team that is always waiting on the line for your inquiries.