Drawing chess board

 # import turtle package 

import turtle 

# create screen object 

sc = turtle.Screen() 

# create turtle object 

pen = turtle.Turtle() 

# method to draw square 

def draw(): 

for i in range(4): 

pen.forward(30) 

pen.left(90) 

pen.forward(30) 

 

sc.setup(600, 600) 

pen.speed(100) 

for i in range(8):

pen.up() 

pen.setpos(0, 30 * i)  

pen.down() 

for j in range(8): 

 

if (i + j)% 2 == 0: 

col ='black'

else: 

col ='white'

pen.fillcolor(col) 

pen.begin_fill() 

 

draw() 

pen.end_fill() 

pen.hideturtle() 

t=input()