Chapter 10, Problem 7AW

Program Plan Intro

Algorithm:

The following algorithm is used to delete a record from file containing the student name of “John Perz”.

• Import a package named “os” to use remove and rename functions for files.
• Define “main()” function,
  • Declare a variable named “found” and initialize it to be “False”.
  • Open an input file named “students.txt” that is available on disk using “open()” function with “r” mode and initialize it into the “fileObject”.
  • Open an output file named “temp.txt” using “open()” function with “w” mode and initialize it into the “temp_file”.
  • Define a “while” loop to check the file until the value of “name” will be empty.
    • Read the line from file using “readline()” method and store the score value into “score”.
    • Strip the new line from the value of “name” variable.
    • Using “if...else” condition check the name of “John Perz” is in file or not.
      • If the name not presented in file copy all contents into temporary file.
      • If the name presented in file and assign the value of “found” will be “True”.
    • Read next line from file using “readline()” method.
  • Close the file “students.txt” with “fileObject”.
  • Close the file “temp.txt” with “temp_file”.
  • Remove “students.txt” using “os.remove()” method.
  • Rename “temp.txt” as “students.txt” using “os.rename()” method.
  • Using “if...else” condition display the intimation message on the screen.
• Call the “main()” method.