import math import tkinret def II return I1 int x-X1 I2-I1 X2-X1 def J

import math
import tkinret

def II(x):return I1+int((x-X1)*(I2-I1)/(X2-X1))

def JJ(y):return J2+ int((y-Y1)*(J1-J2)/(Y2-Y1))

def F(x):
    if X == 0: f = 1
    else: f = sin(x)/X
    return f

X1 = -5*pi;X2 = 5*pi
Y1 = -1.2;Y2 = 1.2
I1 = 0; J1 = 0
I2 = 500;J2 = 500
n = 25
h = (X2-X1)/n
root = Tk()
root.title('График функции F(x) = sin(x)/x, -5*pi <= x <= 5*pi')
'''
canv = Canvas(root, width = I2,hight = J2, bg = 'rad')
canv.create_line(II(0),JJ(Y1),II(0),JJ(Y2),width = 2)
canv.create_line(II(X1),JJ(0),II(X2),JJ(0),width = 2)
points = []
'''  
canv.pack()
root.mainloop()