IT-Mathematics

from graphics import *
from math import *

result = 0

def main():
win = GraphWin(“Pi Approx”, 550, 450)
win.setCoords(0.0, 0.0, 3.0, 4.0)
Text(Point(1,3.25), “Number of Terms:”).draw(win)
Text(Point(0.86,1.5), “Value of pi:”).draw(win)
Text(Point(0.86,1.75), “The Result Data”).draw(win)
Text(Point(0.86,1.25), “Sum of This Series:”).draw(win)
Text(Point(0.86,0.75), “True Fractional Relative Error:”).draw(win)
Text(Point(0.86,0.5), “True Percent Relative Error:”).draw(win)
Text(Point(0.86,1), “True Error:”).draw(win)

input = Entry(Point(2,3.25), 5)
input.setText(“0”)
input.setFill(“white”)
input.draw(win)
Perror = Text(Point(2, 0.5),””)
Rerror = Text(Point(2,0.75),””)
error = Text(Point(2,1), “”)
sum_of_terms = Text(Point(2,1.25),””)
math_pi = Text(Point(2,1.5),””)
sum_of_terms.setStyle(“italic”)
math_pi.setStyle(“italic”)
error.setStyle(“italic”)
Rerror.setStyle(“italic”)
Perror.setStyle(“italic”)
sum_of_terms.draw(win)
math_pi.draw(win)
error.draw(win)
Rerror.draw(win)
Perror.draw(win)
button = Text(Point(1.5,2.5),”Approx”)
button.setFill(“red”)
rect = Rectangle(Point(1.10,2.75),Point(1.90,2.25))
rect.setFill(“green”)
rect.draw(win)
button.draw(win)
win.getMouse()

a = eval(input.getText())
global result
for x in range(1, a+1):
divisor = 2 * x – 1
if x%2==0:
result = result – (4.0/divisor)
else:
result = result + (4.0/divisor)

sum_of_terms.setText(str(result))
math_pi.setText(str(pi))
error.setText(str(pi-result))
Rerror.setText(str((pi-result)/pi))
Perror.setText(str(((pi-result)/pi)*100)+”%”)
button.setText(“Quit”)
win.getMouse()
win.close()

main()