how and when abstract classes are used in python

Answers

Answer 1

Answer:

A class is called an Abstract class if it contains one or more abstract methods. An abstract method is a method that is declared, but contains no implementation. Abstract classes may not be instantiated, and its abstract methods must be implemented by its subclasses.

Explanation:

So it only makes sense to use them if you plan to have preferably more than one subclass.


Related Questions

write passage on computer virus​

Answers

In more technical terms, a computer virus is a type of malicious code or program written to alter the way a computer operates and is designed to spread from one computer to another. A virus operates by inserting or attaching itself to a legitimate program or document that supports macros in order to execute its code.

Answer:

A computer virus is a relatively small program that attaches itself to data and program files before it delivers its malicious act. There are many distinct types of viruses and each one has a unique characteristic. Viruses are broken up into to main classes, file infectors and system or boot-record infectors.

hope it helps

Write an LC-3 assembly language program to read in a two-digit decimal number whose digits add up to less than 10 and display the sum of those digits in the next line.
Sample execution (user input underlined) : Please enter a two-digit decimal number > 27. The sum of the digits = 9

Answers

Answer:

Explanation:

.MODEL SMALL

.STACK 100H

.DATA

   STR1 DB 0AH,0DH, 'THE SUM OF TWO DIGITS PRENT IN THE GIVEN NUMBER'

   FNUM DB ?

   STR2 DB ' AND '

   SNUM DB ?

   STR3 DB ' IS '

   ANS DB ?

   STR4 DB ' $'

.CODE

MAIN PROC

   MOV AX, "at" DATA       PLEASE NOTE: your "at" need to be in symbol

   MOV DS,AX                    It is because this text editor who allow the sub-

                                            mission of this answer if i use the symbol format

   MOV AH,2                       that is why put it in bold and parenthesis

   MOV DL,3FH

   INT 21H

   MOV AH,1

   INT 21H

   MOV BL,AL

   MOV FNUM,AL

   INT 21H

   MOV SNUM,AL

   ADD BL,AL

   SUB BL,30H

   MOV ANS,BL

   MOV AH,9

   LEA DX,STR1  

   INT 21H

   MOV AH,4CH

   INT 21H

   MAIN ENDP

END MAIN

Files can be stored on hard drives, network drives, or external drives, but not in the cloud.
True
False

Folders provide a method for organizing files.
True
False

Answers

The first one is false and the second is true

Answer: (1) False, (2) True

Explanation:

Write a loop to print all elements in hourly_temperature. Separate elements with a -> surrounded by spaces. Sample output for the given program: (must be in python)
90 -> 92 -> 94 -> 95
Note: There is a space after 95.
------------------------------------------------------------------------------------------------------------------------
hourly_temperature = [90, 92, 94, 95]
for temp in hourly_temperature:
for index,temp in enumerate(str(temp)):
if index != len(temp)-1:
print(temp,'->',end=' ')
else:
print(temp, end='')
print('') # print newline
------------------------------------------------------------------------------------------------------------------------
My expected out is:
90 -> 92 -> 94 -> 95
I keep getting:
90 -> 92 -> 94 -> 95 ->
NOTE: I can't edit the last line "print('') #print newline"

Answers

Answer:

Following are the code to this question:

hourly_temperature = [90, 92, 94, 95]#defining a list that holds values

c= 0#defining a variable c

for temp in hourly_temperature:#defining a for loop to count list values

   c+= 1#defining c variable to increment the value of c

   for index,temp1 in enumerate(str(temp)):#defining for loop for spacing the list value

       if index == len(str(temp))-1 and c!= len(hourly_temperature):#defining if block that checks the length of list

           print(temp1,'->',end=' ')#print value

       elif c == len(hourly_temperature) and index == len(str(temp)) - 1:#defining elif block that checks the length of list

           print(temp1, end=' ')#print value

       else:#defining else block

           print(temp1, end='')#print value

Output:

90 -> 92 -> 94 -> 95  

Explanation:

In the above-given code, a list "hourly_temperature" is declared, in which an integer variable c is declared, that holds an integer value that is equal to 0, and two for loop is declared, and in the first loop is used for count list value, and inside the for loop is uses enumerate method to assigns an index for each item and use the conditional statement to check each list value and provide space in each element value.

To prevent long page load times for pages containing images, it is best to use a compressed file format such as JPG, as well as appropriate image dimensions and
resolution.
magnification.
orientation.
colors.

Answers

Answer:

The answer to this question is given below in the explanation section.

Explanation:

The given options to this question are:

resolution. magnification. orientation. colors.

The correct option to this question is 1. i.e.

Resolution.

The resolution of an image determines how many pixels per inch an image contains. Image having a higher resolution takes long page load times for a page and lower resolution takes less page load time. So, to prevent long page load times for pages containing images, it is best to use compressed file formation as well as appropriate image dimension and resolution.

While other options are not correct because:

Magnification, orientation, and color does not affect the page load time. Page load time for images only affected by the dimension and resolution of the images.

g 'write a function that takes as input a list and outs a new list containing all elements from the input

Answers

Answer:

def mylist(*args):

   return args

new_list = mylist(2,3,4,5)

Explanation:

The simple python code above defines a function called mylist that receives multiple length of element as a list and returns the list a new list. The "*args" allows the function to receive any number of item and converts them to a list that is returned in the next statement.

The can also be achieved by simply assigning a squared bracket enclosed list to the variable or with the list() constructor.

Drag the tiles to the correct boxes to complete the palrs.
Match the types of letters with their descriptions.
letter of interest
cover letter
thank you letter
letter of recommendation
discusses how you meet job requirements
>
reiterates why you're the best candidate for the job
>
tells more about your character and who you are
expresses your interest in working for a company

Answers

Answer:

Letter of interest> tells you more about your character and who you are expresses your interest in working for a company

Letter of recommendation> reiterates why you're the best candidate for the job

Cover letter> discusses how you meet job requirements

Hope this helped!

Answer:

Discusses how you meet job requirements = Cover Letter

Expresses your interest in working for a company = Letter of Interest

Tells more about your character and who you are = Letter of Recommendation

Reiterates why you're the best candidate for the job = Thank You Letter

Hi, Everybody i have a question it is almost my B-day i want this lego set
(Nintendo Entertainment System™) BUT THEY ARE SOLD OUT
I NEED HALP

Answers

Answer:

You can look at different websites of look on an app for people selling it, or something :p

Explanation:

Which will you see on the next line 9, 2, 3.5, 7]

Answers

Answer:

plenipotentiaries. It was by far the most splendid and

important assembly ever convoked to discuss and

determine the affairs of Europe. The Emperor of

Russia, the King of Prussia, the Kings of Bavaria,

Denmark, and Wurttemberg, all were present in

person at the court of the Emperor Francis I in the

Austrian capital. When Lymie put down his fork and

began to count them off, one by one, on the fingers

of his left hand, the waitress, whose name was Irma,

thought he was through eating and tried to take his

plate away. He stopped her. Prince Metternich (his

right thumb) presided over the Congress, and

Prince Talleyrand (the index finger) represented

France? please let me know if this is the answer you were looking for!!

Answer:

I guess 6.......maybe or 1 kinda.....

I am dumb for this question

For things like school, you should have a more serious:

Answers

Answer:

who and what do you mean

Explanation:

A switch is a device that connects multiple computers into a network in which multiple communications links can be in operation simultaneously. True False

Answers

Answer:

True

Explanation:

A network switch is also called switching hub or a bridging hub. It is a device that connects multiple computers into a network in which multiple communications links can be in operation simultaneously. It makes use of Mac addresses in the forwarding of the data link layer (layer 2) of the OSI model. Types include managed switches, unmanaged switches, smart switches but to mention a few.

Do you think GE will become one of the top 10 U.S. software companies? Why or why not?

Answers

Answer: I do belive GE will be one of the top 10 software companies because each year the software side of GE is growing 20 perecnt per year which is a big deal!

Explanation:

There are different kinds of firms. I think GE will become one of the top 10 U.S. software companies. The world is gradually turning to the production of electric cars and much more appliances and with this, I believe they would grow to the top 10 in no time.

General Electric Company (GE) is known to be one of the top American multinational conglomerate that is seen in New York State.

It has its headquartered in Boston and thy have been ranked 33rd in the 2020 ranking, among the Fortune 500 in the United States using their gross revenue.

Learn more about General Electric Company from

https://brainly.com/question/26379157

Write a test program that prompts the user to enter a two dimensional array and displays the location of the smallest element in the array.

Answers

Answer:

def element_loc():

   is_end = 'n'

   dimen2 = []

   while is_end == 'n':

       par1 = input("Enter rows and columns: ").split(",")

       part = [int(i) for i in par1]

       dimen2. append(part)

       is_end = input("Do you want to add more rows? y/n: ")

   mini = list()

   for i in dimen2:

       mini. append(min(i))

   result = min(mini)

   row_index = mini. index(result)

   col_index = dimen2[row_index]. index(result)

   print("Row: ", row_index, "Col_index: ", col_index)

element_loc()

Explanation:

The python program solution above prompts users for the two-dimensional array and then the rows of the array are compared with the minimum value stored in another list or array. The row index and the column index are gotten from the mini and dimen2 arrays respectively and are displayed as the position of the minimum value in the two-dimensional array.

turns on her laptop and gets the error message "OS NOT FOUND." She checks the hard disk for damage or loose cable, but that is not the case. What could be a possible cause?

Answers

It needs an Operating System like a cable or something that will help it operate look for more and double check

You are configuring a firewall to use NAT. In the configuration, you map a private IP address directly to a persistent public IP address. What form of NAT is being used?
A. Registered NAT.B. Static NAT.C. Dynamic NAT.D. Advanced NAT.

Answers

Answer:

Option B (Static NAT) would be the correct choice.

Explanation:

Static NAT seems to be a method of NAT methodology used to navigate as well as monitor internet usage from some kind of specific public IP address to something like a private IP address. Everything always allows the provision of web access to technology, repositories including network equipment inside a protected LAN with an unauthorized IP address.

Some other decisions made aren't relevant to the situation in question. So the above alternative is indeed the right one.

Define a toString prototype method that returns the cat's name, gender, and age separated by semicolons.

Answers

Answer:

Following are the program to this question:

import java.util.*;//import package for user input

public class Main//defining main class

{

public static String Cat (String name, String gender, int age)//defining string method Cat that accept parameter value

{

return name + ';' + gender + ';' + age;//return parameter value

}

public static void main(String[] args) //defining main method

{

   String name,gender;//defining String variable

   int age;//defining integer variable

   System.out.println("Enter name, gender and age: ");//print message

   Scanner obx=new Scanner(System.in);//creating Scanner class object for user input

   name=obx.next();//input name value

   gender=obx.next();//input gender value

   age=obx.nextInt();// input age value

   System.out.println(Cat(name,gender,age));//print return method value

}

}

Output:

Enter name, gender and age:  

dani

Female

12

dani;Female;12

Explanation:

In the above-given code, a string method Cat is declared, that accepts three variable "name, gender, and age", inside the method return keyword is used that returns the parameter values.

In the main method, the above parameter variable is declared, which is used to input value from the user-end, and used the print method to print its return value.

C++ Write a program that initially asks a user to enter two positive integer numbers a and b. If either a or are zero or negative, the program terminates right away. Then, generate an array of 20 integer numbers, each randomly generated between a and b. If b happens to be greater than a, then the array must contain elements randomly generated between b and a. Display the whole array on the screen. After creating and displaying the array, the program shows:
[A]verage [S]um [F]ind Please choose an option: Then, if the user selects:
- A (lowercase or uppercase): the program computes and displays the average of all elements of the array
-A (lowercase or uppercase): the program computes and displays the average of all elements of the array
-F (lowercase or uppercase): the program asks the user to insert an integer number to be found in the array
If present, the program displays "Found in position number followed by the position of the first occurrence.
If not present, the program displays "Number not found in the array"

Answers

Answer:

#include <iostream>

#include <algorithm>

using namespace std;

int main(){

   int a, b, c[20], search, maxi, mini, totalSum = 0;

   char option;

   int * p;

   cout<< "Enter value for a: ";

   cin>> a;

   cout<< "Enter value for b: ";

   cin>> b;

  if (a == 0 || b == 0){

      cout<< "Both values must be greater than zero.";

  } else if(a>b){

        maxi = a;

       mini = b;

   }

else{

        maxi = b;

        mini = a;

   }

    for (int i =0; i < 20; i++){

        c[i] = (rand() % maxi) + mini;

        totalSum += c[i];

    }

   cout << "Please choose an option: 1 , 2, 3 ";

   cin>> option;

   option = tolower(option);

   switch(option){

       case 1:

           cout << "The Average of the array items is: "<< totalSum/20;

           break;

        case 2:

           cout<< "The sum of the array items is: "<< totalSum;

           break;

       case 3:

            cout<< "Enter number to be searched: ";

            cin>> search;

             p = find (c, c+20, search);

             if (p != c+20)

{

                cout << "Element found in c array: " << *p << '\n';

             }else{

                 cout << "Element not found in c array\n";

             }

             break;

   }

}

Explanation:

The C++ source code prompts the user for the a,b, option and search values and executes either of the options from the switch statement.

Answer:

#include <iostream>

#include <algorithm>

using namespace std;

int main(){

int a, b, c[20], search, maxi, mini, totalSum = 0;

char option;

int * p;

cout<< "Enter value for a: ";

cin>> a;

cout<< "Enter value for b: ";

cin>> b;

if (a == 0 || b == 0){

cout<< "Both values must be greater than zero.";

} else if(a>b){

maxi = a;

mini = b;

}

else{

maxi = b;

mini = a;

}

for (int i =0; i < 20; i++){

c[i] = (rand() % maxi) + mini;

totalSum += c[i];

}

cout << "Please choose an option: 1 , 2, 3 ";

cin>> option;

option = tolower(option);

switch(option){

case 1:

cout << "The Average of the array items is: "<< totalSum/20;

break;

case 2:

cout<< "The sum of the array items is: "<< totalSum;

break;

case 3:

cout<< "Enter number to be searched: ";

cin>> search;

p = find (c, c+20, search);

if (p != c+20)

{

cout << "Element found in c array: " << *p << '\n';

}else{

cout << "Element not found in c array\n";

}

break;

}

}

Explanation:

The C++ source code prompts the user for the a,b, option and search values and executes either of the options from the switch statement. Is correct

Explanation:

Great work person above me! :)

high level languages are closer to machine language than humans yes or no​

Answers

they are closer to human languages and further from machine so, no.

Answer:

yes

Explanation:

because they were built from humans

Which type of error occurred in the following lines of code?


>>> print(9 / 0)

Traceback (most recent call last):

File " ", line 1, in

9/0

ZeroDivisionError: division by zero
Answer choices:
reserved word error

logical error

exception

syntax error

Answers

Answer: Logical Error

The division by 0 is a logical error.

Documenting findings, actions, and outcomes of network troubleshooting calls is an essential part of the troubleshooting process. List the reasons why documentation is critical, and discuss the form that this documentation could take (e.g. blogs, wikis, professional document management software, etc). Include a detailed description of what information would need to be saved.

Answers

Answer:

The main purpose of documentation is for future reference on the cost, materials, procedures, and techniques used in a task. It can be in form of a video log, report, digital text document or software, etc.  

Explanation:

Documentation is an important practice of taking notes of events during a process. It could in the process of creating or discovering new ideas or repair or management of existing processes. It holds the time, cost, technique, event name, measures-taken, etc, that would totally describe the event.

what feature should be used before a document is printed

Answers

Print preview is a feature that displays on the screen what a hard copy would look like when printed. By using print preview, you can find any errors that may exist or fix the layout before printing, which can save ink or toner and paper by not having to print more than once.

Code used when creating a hyperlink to a specific part of the same page.

Answers

Answer:

Give The Object Or Text You'd Like To Link To A Name.

Take That Name That You've Chosen, And  Then Now Insert It To An Opening HTML Anchor Link Tag.

Place That Complete Opening <a> Tag From Before The Text Or Object You Want To Link It To, Then Now Add A Closing </a> tag after.

(Hope this is correct and hope this helped. Sorry if I'm wrong and you get this wrong)

A backup can be installed that costs​ $100. What is the minimum allowable reliability for the backup that would make installing it​ worthwhile? The minimum allowable reliabilit​ = nothing​%

Answers

Answer:

0.95

Explanation:

Reliability is a assurance that a machine would have an efficiency of one or close to one.

The minimum allowable reliability R;

(1 - R) x 2000 = 100

Make R the subject of the formula;

R = 1 - (100/ 2000)

R = 1 - 0.05

= 0.95

NEED HALP ASAP!!!
giving out brainiest
What does output allow a computer to do?
O Display information
O Receive information
B
Do complex math problems
Do math problems quickly

Answers

Answer:number one

number one

Explanation:

Answer:

a

Explanation:

xbox one is not turning on and power brick is orange why is that?​

Answers

Answer:

the power supply is working fine but has been set to energy-saving power mode.

Explanation:

A steady orange light on the power brick means that the power supply is working fine but has been set to energy-saving power mode. This happens as a safety precaution when a power surge is detected. In order to fix this, you must first unplug the power brick from both the Xbox one and the wall socket. Next, you have to leave the power brick disconnected for about 30 seconds to a minute so that the energy completely fades. Finally, plug back in the cable and restart your console. It should now have a steady white light and be back to functioning perfectly.

Select all examples of proper keyboarding technique.

Look at the keys while keyboarding.
Keep your hands higher than your elbows.
Sit up straight.
Relax your fingers.
Aim to make no mistakes.

Answers

Answer:

all except keeping your hands higher than your elbows

Answer:

Sit up straight.

Relax your fingers.

Aim to make no mistakes.

Explanation:

Explain how a stored procedure is processed by the DBMS query processor (including the type of return value after the query is processed

Answers

Answer:

The stored procedures in DBMS can be executed with;

EXEC procedure_name

It can also be executed with single or multiple arguments with

EXEC procedure_name (use the at tag here)Address= data1, (use the at tag here)Address= data2;

It returns a status value of the queried table.

Explanation:

A stored procedure is a subroutine used in SQL servers to perform a task on a table in a database or the database itself. The syntax for creating a stored procedure is;

CREATE PROCEDURE procedure_name

And then, other statements can be written to be executed when the procedure is called.

A .cache is made up of _____ , each of which stores a block along with a tag and possibly a valid/dirty bit

Answers

Answer:

Blocks

Explanation:

A .cache is made up of blocks, each of which stores a block along with a tag and possibly a valid/dirty bit.

Basically, each blocks that makes up the cache stores additional block and sometimes a bit.

As an interviewer, it is not necessary to be at eye level with interviewee

True
False

Answers

Answer:

True

Explanation:

Have a great day

Answer:

True

Hope this helps

Asymmetric encryption uses only 1 key.

A)
False

B)
True

Answers

A.) false

Symmetric encryption uses a single key that needs to be shared among the people who need to receive the message while asymmetric encryption uses a pair of public key and a private key to encrypt and decrypt messages when communicating.
A) false is the answer
Other Questions
7. Which of the following accurately portrays what life was like for pioneers traveling west?A.Pioneers traveled along well-maintained trails with little difficulty.B.Entire families rarely traveled together because it was too dangerous for the children.C. Pioneers carried all their possessions on long and dangerous trails. the structure where the respiratory system and circulatory system meet is the____. - What is the missing number for this equation? (-3) + _____ = -7-What is the missing number for this equation ? ______ + (-23) = -11 In triangle ABC, angle A is 35 and angle b is 20 select all triangle which are similar to triangle ABC. URGENT!!!! HELP PLEASE!!! Carbohydrates are our main source of1.Food2.Nutrients3.Energy4.Protein An artist who uses wet on wet or graded/gradient washes is working in Put summary of I Have a Dream Why did the Tlingit people want the bones returned to their tribe? Use the drop-down menus to complete each sentence.A writing system was developed during the Shang dynasty to .Developments in iron making helped the ancient Chinese produce stronger .The Zhou dynasty constructed roads and canals to . HELP!!!To help ensure that an HTML document renders well in many different web browsers, it is important to include which of the following at the top of the file.A) an html tagB) a doctype declarationC) a body tagD) a head tag Match the item with the section of the marketing plan it belongs in. To match the items, click the item, and then click the section.Match the item with the section of the marketing plan it belongs in.To match the items, click the item, and then click the section.The amount you plan to spend on each promotional strategy.Marketing messageThe number of sales you plan to have in the next year.Product descriptionStrengths and weaknesses of other companies that provide similar products.Other marketing goalsThe message about your product's benefits that you plan to convey to your target market.BudgetThe percentage of customers who say they are highly satisfied in your customer profile survey.CompetitionThe qualities you want to have people associate with your product.PricingA list of the product's features.Market researchHow the cost of your product will support your brand image and marketing message.Brand image goalsA description of general economic trends and how they are likely to affect the target market.Promotional strategiesWays you will communicate with your target market.Financial goals Find the square root of -36.A-6B 6C Cannot be done who likes melanie martinez Part AWhat is the central idea in the Newsela article "Joseph Campbell and the Hero's Journey"?Campbell found that many stories have a similar structure.Story analysts study heroes in blockbuster films.Good storytellers read Campbell's work to develop strong characters.Screenwriters adapt the monomyth model in films today.Question 2Part BWhich quote best supports the answer to Part A?"The monomyth is the typical path a story takes, across all cultures and religions.""A hero leaves the ordinary world and ventures into a region of magic and wonder.""In the early 1990s, screenwriting author Christopher Vogler studied Campbell's work at the University of Southern California.""The next time you tell a story, think about the way you are telling it and why." Which equation is modeled below?-x+ 1 = 2x+ 3X+(-1) = 2x+3X+(-1) = 3x+2-2x = 2x+3 can you figure out the answer please Mrs. Rollins raises prized chickens. Each chicken eats the same amount of food. Mrs. Rollins bought 100 pounds of chicken food last week. How much food did each chicken eat? Some people see hydroelectric energy, energy harnessed from watermovement, as a clean alternative to fossil fuels. Others believe that utilizingthis renewable energy source is dangerous for the salmon populations thatrely on water sources for migration. Which environmental factor should betaken into consideration when deciding to use renewable sources of energylike hydroelectricity?a. cost savings from switching from fossil fuels to renewable energyincreases in carbon emissions due to the production of new energysystemsdecreases in renewable energy as they are being used for humansustainabilityd. fluctuations of limiting factors in the ecosystem affected by the newsource of energyC. 13.WRITE Math Write a word problem that involves two fractions.Include the solution.Please help fast