Computers and Technology, 06.12.2021 03:30 catman7884

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. Be sure to include error recovery in the program. If the user enters a filename that does not exist they should be prompted to enter a filename that does exist.

An example of the program input and output is shown below:

/root/sandbox
1 List the current directory
2 Move up
3 Move down
4 Number of files in the directory
5 Size of the directory in bytes
6 Search for a file name
7 View the contents of a file
8 Quit the program
Enter a number: 7

Files in /root/sandbox:
filesys. py
example. txt
Enter a file name from these names: example. txt

THIS IS CONTENT OF AN EXAMPLE FILE.

/root/sandbox
1 List the current directory
2 Move up
3 Move down
4 Number of files in the directory
5 Size of the directory in bytes
6 Search for a file name
7 View the contents of a file
8 Quit the program
Enter a number: 8

Have a nice day!

Answers: 1

Show answers

Another question on Computers and Technology

Computers and Technology, 21.06.2019 22:00

Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate for the data below. internet speed levels of "fast comma " "medium comma " and "slow" choose the correct answer below. a. the ordinal level of measurement is most appropriate because the data can be ordered comma but differences left parenthesis obtained by subtraction right parenthesis cannot be found or are meaningless. nothing nothing nothing nothing nothing b. the interval level of measurement is most appropriate because the data can be ordered comma differences left parenthesis obtained by subtraction right parenthesis can be found and are meaningful comma and there is no natural starting point. c. the nominal level of measurement is most appropriate because the data cannot be ordered. nothing d. the ratio level of measurement is most appropriate because the data can be ordered comma differences left parenthesis obtained by subtraction right parenthesis can be found and are meaningful comma and there is a natural starting point.

Answers: 2

Answer

Computers and Technology, 22.06.2019 08:10

Alook-up table used to convert pixel values to output values on a monitor. essentially, all pixels with a value of 190 or above are shown as white (i.e. 255), and all values with a value of 63 or less are shown as black (i.e. 0). in between the pixels are scaled so that a pixel with a value p is converted to a pixel of value 2/127 −+3969). if a pixel has a value of 170 originally, what value will be used to display the pixel on the monitor? if a value of 110 is used to display the pixel on the monitor, what was the original value of the pixel?

Answers: 1

Answer

Computers and Technology, 22.06.2019 21:30

After you clean an engine with hot water spray, it seems to stall; when it doesn't stall, it's idling noisily. technician a says to check for loose bolts on the flex plate near the torque converter. technician b says to wipe down the spark plug wires and the distributor cap. who is correct? a. technician a b. both technicians a and b c. technician b

Answers: 1

Answer

Computers and Technology, 23.06.2019 12:40

Curriculum exam to process a resident's payment, you must click on onesite payments home page. from the a. reports b. my settings o c.transactions o d. rent tab

Answers: 1

Answer

You know the right answer?

Add a command to this chapter’s case study program that allows the user to view the contents of a fi...

Questions