Fluent Essays

Project 2: Grocery ListIntroductionYour 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 InputLoop through the grocery listProvide output to the consoleData StructureThe structure of the data for this project is extremely important.Each grocery item is a dictionary with the following key-value pairsa name of the grocery item with the key identifier namethe number of grocery items purchased with the key identifier numberthe 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)}, {name: eggs, number: 2, price: 3.99}, {name: onions, number: 4, price: 0.79}] Task: Create the empty data structureCreate an empty dictionary with the variable name grocery_itemCreate an empty grocery_history listControl StructureThe 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 ‘q’As the code in the while loop should run at least once, set the stop variable to anything other that q’, e.g. go or Truestop = goWrite 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:\nVariable: item_nameAccept input of the quantity of the grocery item purchased.Prompt: Quantity purchased:\nVariable: quantityAccept input of the cost of the grocery item input (this is a per-item cost).Prompt: Price per item:\nVariable: costCreate 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_itemThe format will be: {name:item_name, number: int(quantity), price: float(cost)}Add the grocery_item to the grocery_history list using the append functionPrompt 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:\nLooping Through the ListIn this section, you will loop through the grocery_history list. For each item, you will:Print the number of that item purchasedPrint the name of the itemPrint the price paid for all of those items purchasedAdd this price to the grand total for the entire listYour results will look similar to this:2 apple @ $1.49 ea $2.98 1 milk @ $3.99 ea $3.99 Grand total: $6.97 Print the ListDefine variable to hold grand total called grand_totalDefine 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_itemInside the for loop:Calculate the total cost for the grocery_item.The calculation is:item_total = number * priceAdd the item_total to the grand_totalOutput the information for the grocery item to match this example:Output →2apple@$1.49ea$2.98Variable →numbernamepriceitem_totalReminderYour can use the \%.2f formatting expression to format the dollar amountsSet the item_total equal to 0Finally, after printing all the items, print the grand total!The task is broken down into three sections.Section 1 - User InputSection 2 - loop through the grocery listSection 3 - provide output to the console#Task: Create the empty data structuregrocery_item = ?grocery_history = ?#Variable used to check if the while loop condition is metstop = gowhile ?????? : #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 it_140_final_project_script_two_draft_guidelines_and_rubric.pdf Unformatted Attachment Preview IT 140 Final Project Script Two Draft Guidelines and Rubric Grocery List Script Overview: For your final project, you will be creating four small scripts. Collectively, the four scripts will demonstrate your ability to engage in the fundamental scripting and problem-solving approaches that are represented by the course outcomes. Reminder: This is the first draft. Even if your script is not functioning perfectly, submit your draft and get feedback so that you can improve on it for the final submission in Module Six. Prompt: The list object type is one of the most important and frequently used types in a Python program. A list is a container, an object that groups related objects together. A list is also a sequence: The contained objects maintain a left-to-right positional ordering. Elements of the list can be accessed via indexing operations that specify the position of the desired element in the list. Each element in a list can be a different type, such as string, integer, float, or even other list. A dictionary is another type of container object that is different from sequences like strings, tuples, and lists. Dictionaries contain references to objects as key– value pairs: Each key in the dictionary is associated with a value, much like each word in an English language dictionary is associated with a definition. Unlike sequences, the elements of a dictionary do not have a relative ordering of positions. Adding a value to a dictionary can be done either with brackets or using the keyword dict. A programmer can use loops to execute the same code repeatedly as long as some condition is true. The loop expression is evaluated when the program reaches the loop statement. If the loop expression is true, then the indented code block, known as the loop body, is executed. At the end of the loop body, execution goes back to the while loop statement. The loop expression is evaluated again, and if true, the loop body is executed again. But, if the expression evaluates to false, then execution instead proceeds to code below the loop body. Each execution of the loop body is called an iteration, and looping is also called iterating. Your task for this project is to create a very simple grocery list script. This script emphasizes the importance of using lists, dictionaries, and loop types within your script, and how the use of those functions shapes your approach to creating a script. You will be working on this project in the Project Two: Grocery List Script module in Codio. Following the directions in that module, you will also be able to determine the exact placement of the comments you will need to make in the code. In the Codio activity you will work on having your script do the following three things: 1. User Input 2. Loop through the grocery list 3. Provide output to the console After completing the activity, annotate the code. Specifically, your submission for the Grocery List script should address the following critical elements: I. In Your Script (Annotated Text File): Refer to the directions in the module in Codio for how to export out and comment your completed script. A. Create examples of four uses of list operations in the script in your code. Be sure your examples address each of the following: i. Creating lists ii. Adding and removing data from a list iii. Accessing values in a list iv. Modifying values in a list B. Create examples of dictionary operations in your code. Be sure your examples address each of the following: i. Creating dictionaries ii. Adding and removing key–value pairs iii. Accessing values using keys iv. Modifying values C. Create examples of loop structures in your code. Be sure your examples address each of the following: i. Item-based for loops ii. Index-based (range) for loops iii. While loops Rubric Guidelines for Submission: This is a draft of part of the final project. Complete the steps in Codio, then export and comment on the completed script. Once completed, submit the document with your commented code to Brightspace. Feedback will be provided by your instructor to incorporate in the final submission and the reflection document. Critical Elements List Dictionary Loop Script Comments Proficient (100\%) Needs Improvement (75\%) Not Evident (0\%) Value Creates examples of list functions in the script Creates examples of list functions in the script, but uses are inappropriate or inaccurate Does not create examples of list functions in the script 30 Creates examples of dictionary functions Creates examples of dictionary functions, but uses are inappropriate or inaccurate Does not create examples of dictionary functions 30 Creates examples of loop functions in the code Creates examples of loop functions, but uses are inappropriate or inaccurate Does not create examples of loop functions 30 Code is not fully annotated, or submission does not explain the code or does not facilitate navigation of your code 10 Code comments explain and Comments provide little assistance with facilitate navigation of the code understanding the code Total 100\% ... Purchase answer to see full attachment