code: def check_requirements(self):
      try:
          import shapely, pyclipper
      except:
          raise ImportError(
              "This module requires the shapely, pyclipper tools. The running environment does not meet the requirements. Please install the two packages."
          )
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import argparse
  import ast
  import base64
  import math
  import os
  import time
  from io import BytesIO
  import cv2
  import numpy
  from paddle.inference import Config
  from paddle.inference import create_predictor
  from PIL import Image
  from paddlehub.module.module import moduleinfo
  from paddlehub.module.module import runnable
  from paddlehub.module.module import serving
  from paddlehub.utils.log import logger
label_desc: Use image node_id 2 for calling the ChineseTextDetectionDBServer obj's underlying member method code with example usage: obj.check_requirements() without return types