Chapter 7, Problem 13RQ

How can data be written to the end of a text file? A. By setting the mode parameter in the open statement to "w". B. By using the append() method. C. By using the writeAppend() command. D. By setting the mode parameter in the open statement to "a".   Lines read from a text file A. are written as they are read. B. are deleted from the file as they are read. C. include trailing line breaks. D. are superfluous.   How can a file be opened for writing? A. A file can be opened for writing by using the openWrite() command. B. A file can be opened for writing by using the writeOpen() command. C. A file can be opened for writing by including a mode parameter set to "a" or "w" in the open() command. D. A file can be opened for writing by omitting the mode parameter in the open() command.   What happens if you write lines of text to a file without including the line breaks? A. Python automatically adds a line break to each line. B. The file will consist of a single…

Why is it considered good practice to open a file from within a Python script using (a) instead of (b)? (a)  with open(‘textfile.txt’,’r’) as f:      f.readlines() (b)  f=open(‘textfile.txt’,’r’) f.readlines() f.close()   a. When you open a file using the with keyword in Python, Python will make sure the file gets closed, even if an exception or error is thrown. b. The with keyword lets you choose which application to open the file in. c. The with keyword acts like a for loop, and lets you access each line in the file one by one. d. There is no benefit to using the with keyword for opening a file in Python.

i am just wondering what does this piece of code do, what language is it and what meaning it has     if [ -e /tmp/filename ]; then  file=$(cat /tmp/filename)  if [[ "$file" =~ ^/home/[a-zA-Z0-9]+/[a-zA-Z0-9]+\.?[a-zA-Z0-9]*$ ]]; then    if [ -e "${file}" ]; then      cp "${file}" /tmp      chmod 666 /tmp/${file##*/}      rm /tmp/filename    fi  fifi

Run stat (1) on a file in /dev, a folder, a file in /etc/init.d/ and on the/etc/passwd file, What where the difference between the different files you were running stat(1) on?

It is not apparent what will happen if an incorrectly coded software is executed. What will happen when I type in the code for frmProgram? The event handler for the command button may be displayed? What, exactly, does the Unload Me statement serve? If a file is executable, what are its goals?

How can you read a text file one line at a time? A. By using the read() command with no parameters. B. By specifying "o" as the mode parameter in the open() command. C. By using the singleLine() string method. D. By using the file object variable as the sequence in a for loop command.   After opening a file, how can you advance the file position to a particular offset within the file? A. The only way to get to a particular offset within the file is to first read a particular number of characters. B. By using the position() command, specifying the offset as a parameter. C. By using the seek() command, specifying the offset as a parameter. D. By using an index and square brackets on the file object.   What does line.split(";") A. separates the string contained in line at every occurrence of semi-colon B. separates the string contained in line at every occurrence of comma C. separates the string contained in line at the first occurrence of a comma D. concatenates…

I want to add leading zeros to my file names using Bash (Shell) so they get renamed from rock0.py .. rock500.py to rock000.py ... rock500.py. Please tell me why the following code is not working (it deletes all the files from my directory, instead of renaming them): for file in rock*.py; do mv "$file" "rock$(printf "%03d" ${file#rock}).py" done

You work for a small company that keeps the following information about its clients:• first name• last name• a 5-digit user code assigned by your company.The information is stored in a file clients.txt with the information for each client on one line(last name first), with commas between the parts. For exampleJones, Sally,00345Lin ,Nenya,00548Fule,A,00000Smythe , Mary Ann , 00012Your job is to create a program assign usernames for a login system.First: write a function named get_parts(string) that will that will receive as its arguments astring with the client data for one client, for example “Lin ,Nenya,00548”, and return theseparate first name, last name, and client code. You should remove any extra whitespace from thebeginning and newlines from the end of the parts.You’ll need to use some of the string methods that we covered in this lessonYou can test your function by with a main() that is just the function call with the argument typed in.Second: write a function make_user(param)…

Answer the given question with a proper explanation and step-by-step solution.   Hello, I am trying to make a program that prints the contents of a file but whenever I try to run it, it just prints a bunch of question marks infinitely and this only happens when I run it on a UTM virtual machine(Linux terminal). It works fine when I run it on my Mac terminal so I am not sure if it has to do with the virtual machine or my program. Please help!! Image 1: cat.c Image 2: input.txt Image 3: output/results