Question

Add a command to this chapter’s case study program that allows the user to view the contents of a file in the current working directory. When the command is selected, the program should display a list of filenames and a prompt for the name of the file to be viewed.

Answer 1

To view the contents of a file, display a list of filenames with os.listdir(), prompt the user for the file name, check the file exists, open it in read mode, and print its contents.

Step-by-step explanation:

To add a command that allows the user to view the contents of a file in the current working directory, you can follow these steps:

• Display a list of all the filenames in the current directory using a function like os.listdir().
• Show a prompt asking the user to enter the name of the file they want to view.
• Ensure that the file exists and handle potential errors, such as file not found.
• Open the file using 'with open(filename, 'r') as file:' to ensure the file is properly closed after.
• Read the contents of the file and print them out to the user.

By following these steps, a user will be able to view the contents of a file within the current working directory seamlessly.