Starting Out with Python (4th Edition)
Starting Out with Python (4th Edition)
4th Edition
ISBN: 9780134444321
Author: Tony Gaddis
Publisher: PEARSON
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Textbook Question
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Chapter 6, Problem 1MC

A file that data is written to is known as a(n).______.

a. input file

b. output file

c. sequential access file

d. binary file

Expert Solution & Answer
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Program Description Answer

The data that are written to a file are known as output file.

Hence, the correct answer is option “B”.

Explanation of Solution

Output file:

  • A file where the data are written is called as “output file”. The output file is created on the disk and allows the program to write data on it.
  • The “output file” must be accessed using the file name and must be closed after the usage of the file.
    • If the file is not closed properly, it can cause loss of data because the data that are written to a file are stored in a buffer first.
    • After closing a file, the buffer saves the contents into the disk.

Example for output file:

The following program is used to open an output file, write a name to it, and then close it:

#Function main

def main():

         #Open an outfile for writing

         outfile=open('my_name.txt','w')

         #Write the name into file

         outfile.write("Tom cruise")

         #Close the file

         outfile.close()

         #Display statement

         print('Data written to my_name.txt')

#Call the main function

main()

Explanation:

The above program is used to open an output file named “my_name.txt”, write a name to it, and then close it:

  • In the “main()” function, open a file “my_name.txt” and write a name "Tom cruise" to the file using the “write()” method.
  • Close the file using the “close()” method. Display the intimation message on the screen.
  • Call the “main()” function.

Explanation for the incorrect options:

Input file:

A file from which the data are read is called as an input file. When a program gets input from the file, then it is called as input file.

Hence, option “A” is wrong.

Sequential access file:

In sequential access method, the contents of the file are accessed from the beginning to the end.

Hence, option “C” is wrong.

Binary file:

Binary file holds data that are not represented in the form of text. The executable programs are stored in the type of binary file.

  • Due to this, the contents present in the binary file cannot be viewed with normal text editors.

Hence, option “D” is wrong.

Sample Output

Output:

Data written to my_name.txt

Screenshot of “my_name.txt” file

Starting Out with Python (4th Edition), Chapter 6, Problem 1MC

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Chapter 6 Solutions

Starting Out with Python (4th Edition)

Ch. 6.1 - In what mode do you open a file if you want to...Ch. 6.2 - Write a short program that uses a for loop to...Ch. 6.2 - Prob. 13CPCh. 6.2 - Assume the file data.txt exists and contains...Ch. 6.2 - Prob. 15CPCh. 6.3 - Prob. 16CPCh. 6.3 - Prob. 17CPCh. 6.3 - Prob. 18CPCh. 6.4 - Prob. 19CPCh. 6.4 - Prob. 20CPCh. 6.4 - What type of exception does a program raise when...Ch. 6.4 - Prob. 22CPCh. 6 - A file that data is written to is known as...Ch. 6 - A file that data is written to is known as...Ch. 6 - Before a file can be used by a program, it must be...Ch. 6 - When a program is finished using a file, it should...Ch. 6 - The contents of this type of file can be viewed in...Ch. 6 - This type of file contains data that has not been...Ch. 6 - When working with this type of file, you access...Ch. 6 - When working with this type of file, you can jump...Ch. 6 - This is a small holding section" in memory that...Ch. 6 - This marks the location of the next item that will...Ch. 6 - When a file is opened in this mode, data will be...Ch. 6 - This is a single piece of data within a record. a....Ch. 6 - Prob. 13MCCh. 6 - Prob. 14MCCh. 6 - Prob. 15MCCh. 6 - When working with a sequential access file, you...Ch. 6 - When you open a file that file already exists on...Ch. 6 - The process of opening a file is only necessary...Ch. 6 - Prob. 4TFCh. 6 - When a file that already exists is opened in...Ch. 6 - Prob. 6TFCh. 6 - You can have more than one except clause in a...Ch. 6 - Prob. 8TFCh. 6 - Prob. 9TFCh. 6 - Describe the three steps that must be taken when a...Ch. 6 - Why should a program close a file when it's...Ch. 6 - What is a read position? where is the read...Ch. 6 - If an existing file is opened in append mode, What...Ch. 6 - If a file does not exist and a program attempts to...Ch. 6 - Write a program that opens an output file with the...Ch. 6 - Write a program that opens the my_name.txt file...Ch. 6 - Write code that does the following: opens an...Ch. 6 - Prob. 4AWCh. 6 - Modify the code that you wrote in problem 4 so it...Ch. 6 - Write code that opens an output file with the...Ch. 6 - A file exists on the disk named students. txt. The...Ch. 6 - A file exists on the disk named students txt. The...Ch. 6 - Prob. 9AWCh. 6 - Prob. 10AWCh. 6 - File Display Assume a file containing a series of...Ch. 6 - File Head Display Write a program that asks the...Ch. 6 - Line Numbers Write a program that asks the user...Ch. 6 - Item Counter Assume a file containing a series of...Ch. 6 - Sum of Numbers Assume a file containing a series...Ch. 6 - Average of Numbers Assume a file containing a...Ch. 6 - Random Number File Writer Write a program that...Ch. 6 - Random Number File Reader This exercise assumes...Ch. 6 - Prob. 9PECh. 6 - Golf Scores The Springfork Amateur Golf Club has a...Ch. 6 - Personal Web Page Generator Write a program that...Ch. 6 - Average Steps Taken A Personal Fitness Tracker is...

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