Miscellany

def slope(x1, y1, x2, y2):    """      >>> slope(5, 3, 4, 2)      1.0      >>> slope(1, 2, 3, 2)      0.0      >>> slope(1, 2, 3, 3)      0.5      >>> slope(2, 4, 1, 2)      2.0    """    run = x2 - x1    rise = y2 - y1    print run, rise # still here for testing outputs until I get it right