this is python

Given a directed line from point p0(x0,y0) to p1(x1,y1), you can use the following condition to decide whether a point p2(x2,y2) is on the left side of the line, on the right side of the line, or on the same line (see the below Figure) (x1x0)(y2y0)(x2x0)(y1y0)>0=0