Python Question: myfile = open('sales.txt','r') Which statement is correct if the next line in a file holds the unit price of an item? A. price = float(myfile.readline()) B. price = float(sales.readline()) C. price = myfile.read() D. price = myfile.readline().rstrip() E. price = float(myfile.read())

Python Question: myfile = open('sales.txt','r') Which statement is correct if the next line in a file holds the unit price of an item? A. price = float(myfile.readline()) B. price = float(sales.readline()) C. price = myfile.read() D. price = myfile.readline().rstrip() E. price = float(myfile.read())

Programming with Microsoft Visual Basic 2017

8th Edition

ISBN:9781337102124

Author:Diane Zak

Publisher:Diane Zak

Chapter9: Sequential Access Files And Menus

Section: Chapter Questions

Problem 3MQ1

See similar textbooks

Similar questions

In C# create an application that writes a series of random numbers to a file. Each random number should be in the range of 1 through 100. The application should let the user specify how many random numbers the file will hold.
A computer store uses a database to track inventory. The database has a table named Inventory, with the following columns: ProductID INTEGER PRIMARY KEY NOT NULL ProductName TEXT QtyOnHand INTEGER Cost REAL Also assume that the cur variable references a Cursor object for the database. Write Python code that does the following: Executes a SELECT statement to return all the columns from the rows where Cost is less than 999.99. Assigns all the results of the SELECT statement to a variable named results.
A MyPetStore sells many pets and their accessories. As new pets are added to the MyPetStore, theirinformation is entered into a flat text file. Each month, the manager requests a listing of all pets sorted bytheir price. You must write a program to produce a report of MyPetStore and their types sorted by their pricesfrom the data in the flat text file. Below is a description of the information on the text file:• The first entry is the number of animals on the file (numeric) •The fields below repeat for each animal:o Pet name (String)o Birthdate (java.time.LocalDate)o Price (numeric)o Species Type (String)o Special feature (boolean or String)The animals sold by the MyPetStore are of six types: Dogs & Cats, Reptiles, Birds, Rabbits & SmallAnimals.For Dogs & Cats, the special feature field on the flat file is the breed of the animal (String).For Reptiles, the special feature field is the blood type (warm vs cold-blooded, String).For Birds, the special feature field is the…
A computer store uses a database to track inventory. The database has a table named Inventory , with the following columns: ProductID INTEGER PRIMARY KEY NOT NULL ProductName TEXT QtyOnHand INTEGER Cost REAL Also assume that the cur variable references a Cursor object for the database. Write Python code that does the following: Executes a SELECT statement to return all the columns from the rows where ProductName contains the string "Laptop" with any characters before or after it. Assigns all the results of the SELECT statement to a variable named results .
Body Mass Index Write a program that reads names, weights, and heights from bmi.dat (provided with starter code; do not change the file name). Use the information to calculate and displays a person’s body mass index (BMI). The BMI is often used to determine whether a person with a sedentary lifestyle is overweight or underweight for his or her height. A person’s BMI is calculated with the following formula: BMI = weight × 703 / height2 where weight is measured in pounds and height is measured in inches. The file is in the format name weightInKG heightInCM You will read the name, weight and height for 4 people from the file, and you will need to convert the weights in the file to pounds (note that 1 kilogram = 2.2 pounds) and the heights to inches (2.54 cm = 1 inch). The program should display the person's name along with the calculated BMI and a message indicating whether the person has optimal weight, is underweight, or is overweight. Your output should look like A person’s weight…
In this exercise, you modify the Grade Calculator application from this chapter’s Apply lesson. Use Windows to make a copy of the Grade Solution folder. Rename the copy Grade Solution-Intermediate. Open the Grade Solution.sln file contained in the Grade Solution-Intermediate folder. Open the CourseGrade.vb file. The DetermineGrade method should accept an integer that represents the total number of points that can be earned in the course. (Currently, the total number of points is 200: 100 points per test.) For an A grade, the student must earn at least 90% of the total points. For a B, C, and D grade, the student must earn at least 80%, 70%, and 60%, respectively. If the student earns less than 60% of the total points, the grade is F. Make the appropriate modifications to the DetermineGrade method and then save the solution. Unlock the controls on the form. Add a label control and a text box to the form. Change the label control’s Text property to “&Maximum points:” (without the quotation marks). Change the text box’s name to txtMax. Lock the controls and then reset the tab order. Open the form’s Code Editor window. The txtMax control should accept only numbers and the Backspace key. Code the appropriate procedure. The grade should be cleared when the user makes a change to the contents of the txtMax control. Code the appropriate procedure. Modify the frmMain_Load procedure so that each list box displays numbers from 0 through 200. Locate the btnDisplay_Click procedure. If the txtMax control does not contain a value, display an appropriate message. The maximum number allowed in the txtMax control should be 400; if the control contains a number that is more than 400, display an appropriate message. The statement that calculates the grade should pass the maximum number of points to the studentGrade object’s DetermineGrade method. Make the necessary modifications to the procedure. Save the solution and then start and test the application.
Python Please! Create a program that will allow a user to do either of the following things: Get input from the user to write the following information to a file: Student name Assignment average grade Mid-term test grade Fi-nal project grade Fi-nal test grade Allow the user to search the file by student name and output a weighted average (15%, 25%, 25%, and 35%, respectively) based on the grades for that student in the file. The user should be able to choose either of the two options until they want to stop.
In CPP: Monthly Sales Create a program that allows you to view and edit the sales amounts for each month of the current year. Console Monthly Sales program COMMAND MENU view - View sales for specified month edit - Edit sales for specified month totals - View sales summary for year exit - Exit program Command: view Three-letter Month: jan Sales amount for Jan is 14,317.00. Command: edit Three-letter Month: jan Sales Amount: 15293 Sales amount for Jan is 15,293.00. Command: totals Yearly total: 77,786.71 Monthly average: 6,482.23 Command: view Three-letter Month: july Invalid three-letter month. Command: exit Bye! Specifications The program should use a map to store the sales data for each month with the three-letter abbreviation for the month (Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, and Dec) as the key for each item. When the program starts, it should read the sales data inserted from the user. If the user edits the sales data, the…
PHONE DIRECTORYDescription: Create a phonebook directory that will store the contact numbers of N persons. Your program should allow the user to add, view, delete, and update the contacts in the phonebook. Note that one person can have multiple contact numbers. The program will stop when the user command is ‘X’. Program command and entry should not be case-sensitive. That means commands ‘I’ or ‘i’ and the name “Jacky” or “JACKY” are the same. Each contact number can be 7 digits or 11 digits only. The user should input a string containing the command, name, and contact number(s) (Limit the contact number of each person to three). This string should be broken down into fields in order to separate the different values and store them in their appropriate variables. Use linked list in the implementation. Your node must declare at least four instance variables. Program flow: Command> I Jacky 09211234567 Remarks: New contact has been added. Command> V Jacky Contact…
Python - Next Birthdate In this task, we will write a program that reads birthdate data from a given CSV file, and given the current date, determines which person's birthday will be celebrated next. Create a function with the following signature: nextBirthdate(filename, date) filename: parameter, which represents the CSV filename. date: parameter, which represents the current date. The function should open the CSV file, read the birthdate data, and determine which person's birthday will be celebrated next, given the current date. The name of the person should be returned. In other words, given a date, find the person whose birthday is next. Sample Run birthdates.csv Draven Brock, 01/21/1952 Easton Mclean, 09/02/1954 Destiny Pacheco, 10/10/1958 Ariella Wood, 12/20/1961 Keely Sanders, 08/03/1985 Bryan Sloan,04/06/1986 Shannon Brewer, 05/11/1986 Julianne Farrell,01/29/2000 Makhi Weeks, 03/20/2000 Lucian Fields, 08/02/2018 Function Call nextBirthdate("birthdates.csv", "01/01/2022") Output…
IN C LANGUAGE A well-known showroom allows managers to keep track of how many appliances are available or have been sold. Ask the user to input the following information for n number of appliances in the showroom: Code, Price, Status(Available/Sold) Create the following files: 1. “available_appliances.txt” that displays all the information of appliances available in the showroom. 2. “sold_appliances.txt” that displays all the information of sold appliances.
Field Data Type and Size Part number 5 numeric positions Part name 15 alphanumeric positions Quantity in stock 5 numeric positions Another data file named TRANSFL contains the records of transac- tions on the items in the inventory. Each record of this file consists of the following: Field Data Type and Size Part number 5 numeric positions Transaction code 1 numeric position 1 = receipt 2 = issue Quantity transacted 5 numeric positions. Draw a flowchart to show how the master file is updated on the basis of the records of the transaction file. Develop an algorithm for the solu- tion of the above problem. (iv) A data file contains invoice records. The layout of the records is given below: Field Data Type and Size Party Code 5 alphanumeric Invoice Number 6 Numeric Invoice Data 6 ( DD MΜM YY) Gross =Value $7 & cents Discount Amount $6 & cents Sales Tax Amount $7 & cents Net Payable $7 & cents