code: import keras
  import tensorflow as tf
  from .models.all_models import model_from_name
  
  
  def model_from_checkpoint_path(model_config, latest_weights):
  
      model = model_from_name[model_config['model_class']](
          model_config['n_classes'], input_height=model_config['input_height'],
          input_width=model_config['input_width'])
      model.load_weights(latest_weights)
      return model
  
  
  def resnet_pspnet_VOC12_v0_1():
  
      model_config = {
          "output_height": 96,
          "input_height": 384,
          "input_width": 576,
          "n_classes": 151,
          "model_class": "resnet50_pspnet",
          "output_width": 144
      }
  
      REPO_URL = "https://github.com/divamgupta/image-segmentation-keras"
      MODEL_PATH = "pretrained_model_1/r2_voc12_resnetpspnet_384x576.24"
      model_url = "{0}/releases/download/{1}".format(REPO_URL, MODEL_PATH)
      latest_weights = tf.keras.utils.get_file(model_url.split("/")[-1], model_url)
  
      return model_from_checkpoint_path(model_config, latest_weights)
  
  
  # pretrained model converted from caffe by Vladkryvoruchko ... thanks !
  def pspnet_50_ADE_20K():
  
      model_config = {
          "input_height": 473,
          "input_width": 473,
          "n_classes": 150,
          "model_class": "pspnet_50",
      }
  
      model_url = "https://www.dropbox.com/s/" \
                  "0uxn14y26jcui4v/pspnet50_ade20k.h5?dl=1"
      latest_weights = tf.keras.utils.get_file("pspnet50_ade20k.h5", model_url)
  
      return model_from_checkpoint_path(model_config, latest_weights)
  
  
  def pspnet_101_cityscapes():
  
      model_config = {
          "input_height": 713,
          "input_width": 713,
          "n_classes": 19,
          "model_class": "pspnet_101",
      }
  
      model_url = "https://www.dropbox.com/s/" \
                  "c17g94n946tpalb/pspnet101_cityscapes.h5?dl=1"
      latest_weights = tf.keras.utils.get_file("pspnet101_cityscapes.h5", model_url)
  
      return model_from_checkpoint_path(model_config, latest_weights)
  
  
  def pspnet_101_voc12():
  
      model_config = {
          "input_height": 473,
          "input_width": 473,
          "n_classes": 21,
          "model_class": "pspnet_101",
      }
  
      model_url = "https://www.dropbox.com/s/" \
                  "uvqj2cjo4b9c5wg/pspnet101_voc2012.h5?dl=1"
      latest_weights = tf.keras.utils.get_file("pspnet101_voc2012.h5", model_url)
  
      return model_from_checkpoint_path(model_config, latest_weights)
  
apis: tensorflow.keras.utils.get_file