def distance(x0, y0, x1, y1):
    """ Returns the distance between two points.
    """
    return sqrt(pow(x1-x0, 2) + pow(y1-y0, 2))
def distance(x0, y0, x1, y1):
    """ Returns the distance between two points.
    """
    return sqrt(pow(x1-x0, 2) + pow(y1-y0, 2))
def distance ( x0 , y0 , x1 , y1 ) : return sqrt ( pow ( x1 - x0 , 2 ) + pow ( y1 - y0 , 2 ) )
Returns the distance between two points.
Returns the distance between two points .