Question

in python

(27) TKinter : Draw a Stop Sign on a canvas. The Stop Sign is a regular octagon coloured red with a white STOP written in its center (28) TKinter : Write a GUI compound interest caleulator. The relevant form: P Principal in dollars to ln invested early ute of inferest uriien im decimol n mns of tones thue nterstus to be compoded cach yeur: t H: number of years the principal is ineested TP ) The biuol niterest

Answer 1

Answer:

PYTHON CODE FOR 27:

from tkinter import *
import math
root=Tk()

canvas=Canvas(root,width=400,height=400)
canvas.pack()

points=[]
x=200
y=200
r=100
for i in range(0,8):
points.append(x+r*math.cos(2*math.pi*i/8))
points.append(y+r*math.sin(2*math.pi*i/8))

octagon=canvas.create_polygon(points,fill='red')
stop=canvas.create_text(200,200,fill="white",font="Times 40 bold",text="STOP")
root.mainloop()

output:

File "main.py", line 4, in <module> root-Tk () File "/usr/lib/python3 . 4/tkinter/ init--'py", line 1854, in-init self.tk - _tkinter.create (screenName, baseName, className, interactive, wantobject s, useTk, sync, use) tkinter.TclError: couldn't connect to display ":1" Program finished with exit code 1 Press ENTER to exit console