docs: def create_lines(self, draw, n_line, width, height):
          '''绘制干扰线'''
          line_num = randint(n_line[0], n_line[1])  # 干扰线条数
          for i in range(line_num):
              # 起始点
              begin = (randint(0, width), randint(0, height))
              # 结束点
              end = (randint(0, width), randint(0, height))
              draw.line([begin, end], fill=(0, 0, 0))