python利用PIL产生验证码图片

def make_image(image='test.jpg'):
    import Image, ImageDraw, ImageFont, md5, datetime
    im = Image.open(image)
    font = ImageFont.truetype("arial.ttf", 30)
    draw = ImageDraw.Draw(im)
    mp = md5.new()
    mp_src = mp.update(str(datetime.datetime.now()))
    mp_src = mp.hexdigest()
    rand_str = mp_src[0:6]
    draw.text((10,5), rand_str, font=font)
    del draw
    im.save("yzm.jpg")
        
if __name__ == '__main__':
    make_image()