program using a for loop that creates a file and adds the integers 1 through 10 loop to the file. Name the file numbers. txt. Then perform the following on the file: Read all of the numbers stored in the file and calculate their total. Display all the numbers in the file and the calculated total Using a for loop add the following numbers to the file 11 through 20 Delete the following numbers from the f

program using a for loop that creates a file and adds the integers 1 through 10 loop to the file. Name the file numbers. txt. Then perform the following on the file: Read all of the numbers stored in the file and calculate their total. Display all the numbers in the file and the calculated total Using a for loop add the following numbers to the file 11 through 20 Delete the following numbers from the f

Programming Logic & Design Comprehensive

9th Edition

ISBN:9781337669405

Author:FARRELL

Publisher:FARRELL

Chapter7: File Handling And Applications

Section: Chapter Questions

Problem 15RQ

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Write code that does the following: opens an output file with the filename number_list.txt, uses a loop to write the numbers 1 through 100 to the file, and then closes the file.
The function file_first_chars in python takes one parameter, fname, the name of a text file, and returns a string made up of the first character from each line in the file. You may assume there are no blank lines in the file. Hint: Use a for loop to iterate over the lines of the file and accumulate the string of first characters. NOTE: Return the function, don't print For example: Test Result print(file_first_chars("wordlist1.txt")) hsaem
Write a program using a for loop that creates a file and adds odd numbers that are in the integers 1 through 20 to the file. Name the file as numbers.txt. Then perform the following on the file: Read all of the numbers stored in the file and calculate their total. Display all the numbers in the file and the calculated total Using a for loop add the following numbers to the file 21 through 30 Delete the following numbers from the file 24, 25, 26 (using a temp.txt file) Change the number 11 to 50 (using a temp.txt file)
program - python Write a program using a for loop that creates a file and adds even numbers the integers 1 through 20 loop to the file. Name the file numbers. txt. Then perform the following on the file: Read all of the numbers stored in the file and calculate their total. Display all the numbers in the file and the calculated total Using a for loop add the following numbers to the file 21 through 30 Delete the following numbers from the file 24, 25, 26 (using a temp.txt file) Change the number 10 to 50 (using a temp.txt file) Hint: if you want to use ! Use module os that is part of Python to manipulate files.: import os. You can use functions that come with “os” module. Functions remove and rename can be used as explained below. rename(old_name,new_name):This function renames the old_name to new_name). remove(filename)method in Python is used to remove or delete a file.
The function print_last_line in python takes one parameter, fname, the name of a text file. The function should open the file for reading, read the lines of the file until it reaches the end, print out the last line in the file, report the number of lines contained in the file, and close the file. Hint: Use a for loop to iterate over the lines and accumulate the count. For example: Test Result print_last_line("wordlist1.txt") maudlin The file has 5 lines.
File Iteration: Introduction A text file is essentially a sequence of lines. Here is a typical coding pattern for processing each line of a file in turn: Open the file for reading. Use a for loop to iterate over the lines of text, executing a block of one or more statements to process each line. Close the file. Finish processing (print, return, etc.) if needed NOTE: You will need to use this pattern, or some variation of it, to solve the remaining coding problems in this assignment. As the following for loop iterates through each line of the file, the loop variable (`line`) represents the current line of the file as a string of characters. myFile = open("someTextFile.txt", "r") for line in myFile: do something on each iteration do a second thing on each iteration etc... myFile.close() PROBLEM: Read a string from standard input using python. Then, iterate over a text file called "cards.txt" and, for each line of the file that starts with the string read from standard input,…
The python function file_first_chars takes one parameter, fname, the name of a text file, and returns a string made up of the first character from each line in the file. You may assume there are no blank lines in the file. Hint: Use a for loop to iterate over the lines of the file and accumulate the string of first characters.
Summary In this lab, you write a while loop that uses a sentinel value to control a loop in a Python program. You also write the statements that make up the body of the loop. Each theater patron enters a value from 0 to 4 indicating the number of stars that the patron awards to the Guide’s featured movie of the week. The program executes continuously until the theater manager enters a negative number to quit. Instructions Make sure the file MovieGuide.py is selected and open. Write thewhile loop using a sentinel value to control the loop, and also write the statements that make up the body of the loop. Execute the program by clicking the Run button at the bottom of the screen. Input the following as star ratings: 0, 3, 4, 4, 1, 1, 2, -1 must be written with this code: """ MovieGuide.py This program allows each theater patron to enter a value from 0 to 4 indicating the number of stars that the patron awards to the Guide's featured movie of the week. The program executes…
Write a code sample that uses a loop to write the numbers from 1 through 10 to a file.
PYTHON!!!! Write a program that allows the user to navigate the lines of text in a file. The program should prompt the user for a filename and input the lines of text into a list. The program then enters a loop in which it prints the number of lines in the file and prompts the user for a line number. Actual line numbers range from 1 to the number of lines in the file. If the input is 0, the program quits. Otherwise, the program prints the line associated with that number. An example file and the program input and output is shown below: example.txt Line 1. Line 2. Line 3. Enter the input file name: example.txt The file has 3 lines. Enter a line number [0 to quit]: 2 2 : Line 2. The file has 3 lines. Enter a line number [0 to quit]: 4 ERROR: line number must be less than 3. The file has 3 lines. Enter a line number [0 to quit]: 0 Make sure the program gracefully handles a user entering a line number that is too high. The program works as expected for given input, test 1 This…
python Write a program that uses a text file to store the days and hours that a user worked in a week. The program should begin by prompting for the number of days worked in the week. It should continue with a loop for input of the days and hours and for writing these to the file, each on its own line. Sample Output (inputs shown in boldface)How many days did you work this week? 5Enter day of week MondayHow many hours did you work on Monday? 10Enter day of week TuesdayHow many hours did you work on Tuesday? 8Enter day of week WednesdayHow many hours did you work on Wednesday? 12Enter day of week FridayHow many hours did you work on Friday? 12Enter day of week SaturdayHow many hours did you work on Saturday? 8File was created
PYTHON!!!! Write a program that allows the user to navigate the lines of text in a file. The program should prompt the user for a filename and input the lines of text into a list. The program then enters a loop in which it prints the number of lines in the file and prompts the user for a line number. Actual line numbers range from 1 to the number of lines in the file. If the input is 0, the program quits. Otherwise, the program prints the line associated with that number. An example file and the program input and output is shown below: example.txt Line 1. Line 2. Line 3. Enter the input file name: example.txt The file has 3 lines. Enter a line number [0 to quit]: 2 2 : Line 2. The file has 3 lines. Enter a line number [0 to quit]: 4 ERROR: line number must be less than 3. The file has 3 lines. Enter a line number [0 to quit]: 0 The program works as expected for given input, test 1: Custom Test: Delete file at start Test Contents: import os.path try: os.remove('.test.txt')…