Which of the following was the most widely used personal computer application until the mid 90s

I am having trouble with this python question. I am in a beginner level class also so any solution that isn't too complex would

Delicious77 [7]

The code:

filename = input("> ")

with open(filename, "r") as file:

items = file.read()

items = items.split("\n")

for index, item in enumerate(items):

items[index] = item.split("\t")

for item in items:

if item[3] == "Available":

print(f"{item[1]} ({item[0]}) -- {item[2]}")

Explenation:

1. We make the user enter the file's path, in our case "food.txt". This does only work if the .txt file is in the <u>same</u> directory as our code.

2. We get the content of our .txt file with the "open" function. If we use the "open" function inside of a "with" statement we don't have to deal with closing the file after we opened it. The file will close as soon as we exit the statement. The argument "r" indicates that we only want to read the file, not do anything else with it.

3. However the variable "file" doesn't contain the <u>contents</u> of "food.txt", only the class object of our file (if you try "print(file)" you'll only get nonsense). We can simply get the content of the file by calling ".read()" after.

4. We can separate this long str using the ".split()" function. The split function seperates a string by another sertain string (in our case "\n", since the different items are seperated by a newline). Now "items" is a list of strings.

5. Next we go through all items in "items" and separate them by "\t", again using the ".split()" function. Enumerate makes a list of indexes and values from another list (in our case, "items").

6. Now we have a list of lists of strings. The only thing left to do is go through every item and print it if the item's third item is equal to "Available" (notice that this is case-sensative). And print out the result in the desired format.

The code works for me, please ask me if there is anything you don't understand (or if the code is incorrect). Happy to help :D

5 0

2 years ago

A user has a network device that streams media to the LAN. The device is visible on the network. All PCs on the LAN can ping the

trasher [3.6K]

Answer: A. Multicast

Explanation:

Here we are given a situation where it is necessary for the device to stream media to all the PCs connected across the LAN. But as the they are unable to stream the media then it is a problem in the multicast TCP/Ip technology.

Multicasting enables to transfer information or messages from one to many or many to many. Here as a single device is responsible for streaming the content to other PCs across the LAN, therefore it is necessary that multicast has been properly implemented.

Option B is incorrect as it is not a scenario of broadcast as in broadcasting all the receivers must get the streaming however here if a PC does not want to receive the media stream it cannot receive for which multicasting is required.

Option C is incorrect as here we are not talking of one to one communication.

Option D is incorrect as here we cannot have more than one route to send the media content except the LAN.

5 0

3 years ago

71 81 77 15 63 96 36 51 77 18 17

sp2606 [1]

Answer:

Following are the solution to this question:

Explanation:

This algorithm uses the divide and rule approach works, which splits the list into two sublists depending on if they are smaller or larger than the pivotal factor. It has O(n*log n) complexity.

It splits down the list in more than one version frequently till every sublist becomes based on a single element and fuses it to offer an ordered array. The merge type works according. It has O(n*log n) complexity.

Please find the attachment file of the sorting.

4 0

3 years ago

A ________ is s field or set of fields in a record that uniquely defines the record.

Archy [21]

A primary key is the answer. =)

5 0

4 years ago

Write a Python program to balance a checkbook. The main function needs to get the initial balance, the amounts of deposits, and

Irina18 [472]

Answer:

def deposit(deposit_amount, balance):

balance += deposit_amount

return balance;

def process_check(check_amount, balance):

balance -= check_amount

return balance;

balance = float(input("Enter the initial balance: "))

transaction = input("Choose transaction method - D to deposit, C to process check, Q to quit: ")

while transaction != 'Q':

if transaction == 'D':

deposit_amount = float(input("Enter amount to be deposited: "))

balance = deposit(deposit_amount, balance)

print("Current balance is: " + str(balance))

elif transaction == 'C':

check_amount = float(input("Enter amount to process check: "))

if balance >= check_amount:

balance = process_check(check_amount, balance)

print("Current balance is: " + str(balance))

else:

print("Not enough money!")

else:

print("Invalid input!")

transaction = input("Choose transaction method - D to deposit, C to process the check, Q to quit: ")

print("Your final balance is: " + str(balance))

Explanation:

- Create functions to handle deposits and checks

- Ask the user for the initial balance and transaction to be made

- Initialize a while loop iterates until the user enter Q

- Ask the deposit amount or check amount depending on the transaction chosen

- Calculate and print the current balance for each transaction

- Print the final balance

5 0

3 years ago