SaiKiran - 4 months ago 35

Python Question

I tried working on a graphics algorthims which requires a graphics package so i imported graphics the code is here

`from graphics import *`

import time

def BresenhamLine(x1,y1,x2,y2):

""" Bresenham Line Drawing Algorithm For All Kind Of Slopes Of Line """

dx = abs(x2 - x1)

dy = abs(y2 - y1)

slope = dy/float(dx)

x, y = x1, y1

# creating the window

win = GraphWin('Brasenham Line', 600, 480)

# checking the slope if slope > 1

# then interchange the role of x and y

if slope > 1:

dx, dy = dy, dx

x, y = y, x

x1, y1 = y1, x1

x2, y2 = y2, x2

# initialization of the inital disision parameter

p = 2 * dy - dx

PutPixle(win, x, y)

for k in range(2, dx):

if p > 0:

y = y + 1 if y < y2 else y - 1

p = p + 2*(dy - dx)

else:

p = p + 2*dy

x = x + 1 if x < x2 else x - 1

# delay for 0.01 secs

time.sleep(0.01)

PutPixle(win, x, y)

def PutPixle(win, x, y):

""" Plot A Pixle In The Windows At Point (x, y) """

pt = Point(x,y)

pt.draw(win)

def main():

x1 = int(input("Enter Start X: "))

y1 = int(input("Enter Start Y: "))

x2 = int(input("Enter End X: "))

y2 = int(input("Enter End Y: "))

BresenhamLine(x1, y1, x2, y2)

if __name__ == "__main__":

main()

But when i executed this code which gave me this error

`python app.py`

Traceback (most recent call last):

File "app.py", line 1, in <module>

from graphics import *

ImportError: No module named graphics

So i tried to install graphics package from pip but i too failed.

`sudo pip install graphics`

Downloading/unpacking graphics

Could not find any downloads that satisfy the requirement graphics

Cleaning up...

No distributions at all found for graphics

Storing debug log for failure in /home/ubuntu/.pip/pip.log

How to rectify this error?

Answer

You have to download this file and put it in the same folder with your script.

From the docstring:

INSTALLATION: Put this file somewhere where Python can see it.