def angle(self, x0, y0, x1, y1):
        
        """ Calculates the angle between two points.
        """
    
        a = degrees( atan((y1-y0) / (x1-x0+0.00001)) ) + 360
        if x1-x0 < 0: a += 180
        return a
def angle(self, x0, y0, x1, y1):
        
        
    
        a = degrees( atan((y1-y0) / (x1-x0+0.00001)) ) + 360
        if x1-x0 < 0: a += 180
        return a
def angle ( self , x0 , y0 , x1 , y1 ) : a = degrees ( atan ( ( y1 - y0 ) / ( x1 - x0 + 0.00001 ) ) ) + 360 if x1 - x0 < 0 : a += 180 return a
Calculates the angle between two points.
Calculates the angle between two points .