'**DESCRIPTION**
A quick and dirty points rendering routine.
**PARAMETERS**
* *pts* - pts a list of (x,y) points.
* *color* - a color for our points.
* *sz* - the circle radius for our points.
* *width* - if -1 fill the point, otherwise the size of point border
**RETURNS**
None - This is an inplace operation.
**EXAMPLE**
>>> img = Image("lenna")
>>> img.drawPoints([(10,10),(30,30)])
>>> img.show()'

def drawPoints(self, pts, color=Color.RED, sz=3, width=(-1)):

    for p in pts:
        self.drawCircle(p, sz, color, width)
    return None
