Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Related questions
Question
Why my code given me error’s
# Python code to draw snowflakes fractal.
import turtle
import random
# setup the window with a background color
wn = turtle.Screen()
wn.bgcolor("cyan")
# assign a name to your turtle
elsa = turtle.Turtle()
elsa.speed(15)
# create a list of colours
scolor = ["white", "blue", "purple", "grey", "magenta"]
# create a function to create different size snowflakes
def snowflake(size):
# move the pen into starting position
elsa.penup()
elsa.forward(10*size)
elsa.left(45)
elsa.pendown()
elsa.color(random.choice(sfcolor))
# draw branch 8 times to make a snowflake
for i in range(8):
branch(size)
elsa.left(45)
# create one branch of the snowflake
def branch(size):
for i in range(3):
for i in range (3):
elsa.forward(10.0*size/3)
# draw branch 8 times to make a snowflake
for i in range(8):
branch(slice)
elsa.left(45)
# create one branch of the snowflake
def branch (size):
for i in range(3):
for i in range(3):
elsa.forward(10.0*size/3)
elsa.backward(10.0*size/3)
elsa.right(45)
elsa.left(90)
elsa.backward(10.0*size/3)
elsa.left(45)
elsa.right(90)
elsa.forward(10.0*size)
# loop to create 20 different sized snowflakes
# with different starting co-ordinates
for i in range (20):
x = random.randint(-200, 200)
y = random.randint(-200, 200)
sf_size = random.randint(1, 4)
elsa.penup()
elsa.goto(x, y)
elsa.pendown()
snowflake(sf_size)
wn.exitonclick()
Transcribed Image Text:size
32
33
# draw branch 8 times to make a snowflake
ns
34- for iin
(8):
branch(
elsa.left(45)
35
36
37
38
# create one branch of the snowflake
39- def branch (size):
for i in
(3):
(3):
40
for i in
elsa.forward(10.0*size/3)
elsa.backward(10.0*size/3)
elsa.right(45)
elsa.left(90)
elsa.backward(10.0*size/3)
elsa.left(45)
41-
42
43
44
45
46
47
input
Traceback (most recent call last):
File "main.py", line 5, in <module>
wn = turtle.Screen()
File "/usr/lib/python3,B/turtle.py", line 3663, in Screen
Turtle._screen = _Screen ()
File "/usr/1ib/python3.8/turtle.py", line 3679, in
Screen._root = self. root =_Root ()
File "/usr/1ib/python3.B/turtle.py", line 435, in _init_
TK.Tk._init_(self)
File "/usr/lib/python3.8/tkinter/_init_-py", line 2270, in
self.tk =
tkinter.TclError: couldn't connect to display ":1"
init
_init
tkinter.create (screenName, baseName, className, interactive, wantobjects, useTk, sync, use)
... Program finished with exit code 0
Press ENTER to exit console.
Js GDB
4:26 PM
3/13/2022
51
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by stepSolved in 2 steps
Knowledge Booster
Similar questions
- %matplotlib inlineimport numpy as npfrom matplotlib import pyplot as pltimport math xs = np.array([0. , 0.01010101, 0.02020202, 0.03030303, 0.04040404, 0.05050505, 0.06060606, 0.07070707, 0.08080808, 0.09090909, 0.1010101 , 0.11111111, 0.12121212, 0.13131313, 0.14141414, 0.15151515, 0.16161616, 0.17171717, 0.18181818, 0.19191919, 0.2020202 , 0.21212121, 0.22222222, 0.23232323, 0.24242424, 0.25252525, 0.26262626, 0.27272727, 0.28282828, 0.29292929, 0.3030303 , 0.31313131, 0.32323232, 0.33333333, 0.34343434, 0.35353535, 0.36363636, 0.37373737, 0.38383838, 0.39393939, 0.4040404 , 0.41414141, 0.42424242, 0.43434343, 0.44444444, 0.45454545, 0.46464646, 0.47474747, 0.48484848, 0.49494949, 0.50505051, 0.51515152, 0.52525253, 0.53535354, 0.54545455, 0.55555556, 0.56565657, 0.57575758, 0.58585859, 0.5959596 , 0.60606061, 0.61616162, 0.62626263, 0.63636364, 0.64646465, 0.65656566, 0.66666667,…arrow_forwardWrite an application that displays the strings in the provided array alphabetically in ascending order. import java.util.*; public class StringSort { publicstaticvoidmain(String[] args) { String[] values = {"mouse","dog","cat","horse","cow", "moose","tiger","lion","elephant","bird","hamster", "guinea pig","leopard","aardvark","hummingbird"}; }arrow_forwardconvert this code to JAVA location = [] size = [] rover = 0 def displayInitialList(location, size): global rover print("FSB# location Size") for i in range(len(location)): print(i," ",location[i]," ",size[i]) if rover<len(size)-1: print("Rover is at ",location[rover+1]) else: print("Rover is at ",location[rover]) def allocateMemory(location,size,blockSize): global rover if rover<len(size): while size[rover]<blockSize: rover+=1 if i==len(size): return False location[rover] += blockSize size[rover] -= blockSize rover+=1 return True else: return False def deallocateMemory(location,size,delLocation,delSize): i=0 while delLocation>location[i]: i+=1 location[i]-=delSize size[i]+=delSize while True: print("1. Define Initital memory\n2. Display initial FSB list\n3. Allocate memory\n4. Deallocate memory\n5. Exit") print("Enter choice: ",end="") choice = int(input()) if…arrow_forward
- 4. The following program loads and displays an image. Complete the modify function to change the brightness of the image. The parameter m is a multiplication factor. modify will will multiply each pixel by m - that means you need to multiply the red, green, and blue channels by m, create a new pixel with new red, green, and blue values, and replace the old pixel with the new pixel. Be sure none of the red, green, and blue values exceed 255 (if a value is greater than 255, set it to 255). A good example is the sepia tone exercise. Do not change the main function, except to try different values for the multiplication factor. Save & Run Original - 1 of 1 1 import image 3 def modify(pic, m): '''Multiply each pixel by m to darken or brighten an image''' pass #You can leave this or remove it #Your code here to change the brightness of the image 4 5 6 7 8 def main():arrow_forwardPlease add an gif image/plot an gif to this code. This is a brownian motion python code here it is code import numpy as np import matplotlib.pyplot as plt def brownian_motion(L, N): # initialize position in the center of the grid x = L // 2 y = L // 2 # initialize the grid grid = np.zeros((L, L), dtype=np.int32) # loop over the number of steps for i in range(N): # choose a random direction direction = np.random.choice(['up', 'down', 'left', 'right']) # move one step in that direction if direction == 'up': " y += 1" elif direction == 'down': "y -= 1" elif direction == 'left': "x -= 1" elif direction == 'right': "x += 1" # make sure the particle is still on the grid if x < 0 or x >= L or y < 0 or y >= L: "continue" # update the grid grid[y, x] = 1 return grid if __name__ == '__main__': # set the size of the grid L…arrow_forwardHelp with python questions list colorsarrow_forward
- JAVA you guys returned the question and said that it is a writing assignment but it is not. It is a java question, multiple-choice no coding. Please help me with this.arrow_forwardMy code to formulate a circle is giving me an 0.08% difference: Here's my code: # draw circle using turtle object import turtle import math def drawCircle(tobj,x,y,radius): # calculate the distance to travel each time distance = 2.0*math.pi*radius / 120.0 # take the turtle to the x,y co-ordinates tobj.penup() tobj.setposition(x,y) # draw the circle tobj.pendown() for i in range(0,120): tobj.right(3) tobj.fd(distance) def main(): x = 50 y = 75 radius = 100 t = turtle.Turtle() # call drawCircle drawCircle(t,x,y, radius) if __name__=='__main__': main() turtle.mainloop()arrow_forwardMake a class named ClassList that stores an arraylist of strings and create an add method that adds Strings to the arraylistarrow_forward
- public class Program7 { publicstaticvoidmain(String[]args){ int[]numbers=newint[100]; String[]names={"Maria","Aris","Galin","Galena"}; double[]balances=newdouble[]{2,56,12.57,36.57,57.89}; //length System.out.println(numbers.length); System.out.println(names.length); System.out.println(balances.length); //modifying names[3]="Celine Dion"; System.out.println("__________________________"); //looping for(inti=0;i<names.length;i++){ System.out.println(names[i]); } System.out.println("__________________________"); for(Stringname:names){ System.out.println(name); } //modifying array System.out.println("__________________________"); for(inti=0;i<names.length;i++){ names[i]=names[i]+" Annan"; System.out.println(names[i]); } System.out.println("__________________________"); doubletotal=0.0; for(inti=0;i<balances.length;i++){ total+=balances[i]; } System.out.println("Total Balance: "+ total); } } //calculate the average of the total balancearrow_forwarddictionaries = [] dictionaries.append({"First":"Bob", "Last":"Jones"}) dictionaries.append({"First":"Harpreet", "Last":"Kaur"}) dictionaries.append({"First":"Mohamad", "Last":"Argani"}) for i in range(0, len(dictionaries)): print(dictionaries[i]['First']) ************************************************* please modity the above code to "Add an ‘if’ statement(s) to the loop in your solution in Exercise 7 to only show the full name if the first name is “Bob” or if the last name is “Kaur”.arrow_forwardfor the class ArrayAverage write a code that calculates the average of the listed numbers with a double result for the class ArrayAverageTester write a for each loop and print out the resultarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Computer Networking: A Top-Down Approach (7th Edi...Computer EngineeringISBN:9780133594140Author:James Kurose, Keith RossPublisher:PEARSON
Computer Organization and Design MIPS Edition, Fi...Computer EngineeringISBN:9780124077263Author:David A. Patterson, John L. HennessyPublisher:Elsevier Science
Network+ Guide to Networks (MindTap Course List)Computer EngineeringISBN:9781337569330Author:Jill West, Tamara Dean, Jean AndrewsPublisher:Cengage Learning 
Concepts of Database ManagementComputer EngineeringISBN:9781337093422Author:Joy L. Starks, Philip J. Pratt, Mary Z. LastPublisher:Cengage Learning
Prelude to ProgrammingComputer EngineeringISBN:9780133750423Author:VENIT, StewartPublisher:Pearson Education
Sc Business Data Communications and Networking, T...Computer EngineeringISBN:9781119368830Author:FITZGERALDPublisher:WILEY
Computer Networking: A Top-Down Approach (7th Edi...
Computer Engineering
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:PEARSON
Computer Organization and Design MIPS Edition, Fi...
Computer Engineering
ISBN:9780124077263
Author:David A. Patterson, John L. Hennessy
Publisher:Elsevier Science
Network+ Guide to Networks (MindTap Course List)
Computer Engineering
ISBN:9781337569330
Author:Jill West, Tamara Dean, Jean Andrews
Publisher:Cengage Learning
Concepts of Database Management
Computer Engineering
ISBN:9781337093422
Author:Joy L. Starks, Philip J. Pratt, Mary Z. Last
Publisher:Cengage Learning
Prelude to Programming
Computer Engineering
ISBN:9780133750423
Author:VENIT, Stewart
Publisher:Pearson Education
Sc Business Data Communications and Networking, T...
Computer Engineering
ISBN:9781119368830
Author:FITZGERALD
Publisher:WILEY