DDA in Python

gistfile1.py

def ROUND(a):
	return int(a + 0.5)

def drawDDA(x1,y1,x2,y2):
	x,y = x1,y1
	length = abs((x2-x1) if abs(x2-x1) > abs(y2-y1) else (y2-y1))
	dx = (x2-x1)/float(length)
	dy = (y2-y1)/float(length)
	print 'x = %s, y = %s' % (((ROUND(x),ROUND(y))))
	for i in range(length):
		x += dx
		y += dy
		print 'x = %s, y = %s' % (((ROUND(x),ROUND(y))))

drawDDA(2,5,10,20)

length = abs(x2-x1) if abs(x2-x1) > abs(y2-y1) else abs(y2-y1)

As it is written drawDDA(1,5,10,20) doesn't return the same set (or even count of) values as drawDDA(10,20,1,5)

Should work now

'x = %s, y = %s' % (((ROUND(x),ROUND(y)))) this statement should be in parenthesis, else it shows error in VScode.

'x = %s, y = %s' % (((ROUND(x),ROUND(y)))) this statement should be in parenthesis, else it shows error in VScode.

This is python2 code