code: def imageToColor(url: str, scale=200, mode='rgb'):
          
          from PIL import Image
          import colorsys
          if url:
              response = urllib.request.urlopen(url)
              img_buffer = io.BytesIO(response.read())
              img = Image.open(img_buffer)
              img = img.convert('RGBA')
              img.thumbnail((scale, scale))
              statistics = {'r': 0, 'g': 0, 'b': 0, 'coef': 0}
              for cnt, (r, g, b, a) in img.getcolors(img.size[0] * img.size[1]):
                  hsv = colorsys.rgb_to_hsv(r / 255, g / 255, b / 255)
                  saturation = hsv[1] * 255
                  coefficient = (saturation * cnt * a) + 0.01  # avoid 0
                  statistics['r'] += coefficient * r
                  statistics['g'] += coefficient * g
                  statistics['b'] += coefficient * b
                  statistics['coef'] += coefficient
                  color = (
                      int(statistics['r'] / statistics['coef']),
                      int(statistics['g'] / statistics['coef']),
                      int(statistics['b'] / statistics['coef'])
                  )
              if mode.lower() == 'rgb':
                  return color
              elif mode.lower() == 'hex':
                  return "#%0.2X%0.2X%0.2X" % color
              else:
                  return color
          else:
              return False
docs: 将 url 指向的图片提纯为一个颜色