def plot(xys):
    cmd = 'moveto'
    for xy in xys:
        print 306 + 200 * xy[0], 200 * xy[1] - 396, cmd
        cmd = 'lineto'
    print 'stroke'
dataset/ETHPy150Open google/roboto/third_party/spiro/curves/mecsolve.py/plot/swapped operands of `-`