text: # -*- coding: utf-8 -*-
  from .registry import is_model, is_model_in_modules, model_entrypoint
  from .helpers import load_checkpoint
  from .layers import set_layer_config
  from .hub import load_model_config_from_hf
  
  
  def split_model_name(model_name):
      model_split = model_name.split(':', 1)
      if len(model_split) == 1:
          return '', model_split[0]
      else:
          source_name, model_name = model_split
          assert source_name in ('timm', 'hf_hub')
          return source_name, model_name
  
  
  def safe_model_name(model_name, remove_source=True):
      def make_safe(name):
          return ''.join(c if c.isalnum() else '_' for c in name).rstrip('_')
      if remove_source:
          model_name = split_model_name(model_name)[-1]
      return make_safe(model_name)
  
  
  def create_model(
          model_name,
          pretrained=False,
          checkpoint_path='',
          scriptable=None,
          exportable=None,
          no_jit=None,
          **kwargs):
          
      """Create a model
  
      Args:
          model_name (str): name of model to instantiate
          pretrained (bool): load pretrained ImageNet-1k weights if true
          checkpoint_path (str): path of checkpoint to load after model is initialized
          scriptable (bool): set layer config so that model is jit scriptable (not working for all models yet)
          exportable (bool): set layer config so that model is traceable / ONNX exportable (not fully impl/obeyed yet)
          no_jit (bool): set layer config so that model doesn't utilize jit scripted layers (so far activations only)
  
      Keyword Args:
          drop_rate (float): dropout rate for training (default: 0.0)
          global_pool (str): global pool type (default: 'avg')
          **: other kwargs are model specific
      """
      source_name, model_name = split_model_name(model_name)
  
      # handle backwards compat with drop_connect -> drop_path change
      drop_connect_rate = kwargs.pop('drop_connect_rate', None)
      if drop_connect_rate is not None and kwargs.get('drop_path_rate', None) is None:
          print("WARNING: 'drop_connect' as an argument is deprecated, please use 'drop_path'."
                " Setting drop_path to %f." % drop_connect_rate)
          kwargs['drop_path_rate'] = drop_connect_rate
  
      # Parameters that aren't supported by all models or are intended to only override model defaults if set
      # should default to None in command line args/cfg. Remove them if they are present and not set so that
      # non-supporting models don't break and default args remain in effect.
      kwargs = {k: v for k, v in kwargs.items() if v is not None}
  
      if source_name == 'hf_hub':
          # For model names specified in the form `hf_hub:path/architecture_name#revision`,
          # load model weights + default_cfg from Hugging Face hub.
          hf_default_cfg, model_name = load_model_config_from_hf(model_name)
          kwargs['external_default_cfg'] = hf_default_cfg  # FIXME revamp default_cfg interface someday
  
      if is_model(model_name):
          create_fn = model_entrypoint(model_name)
      else:
          raise RuntimeError('Unknown model (%s)' % model_name)
  
      with set_layer_config(scriptable=scriptable, exportable=exportable, no_jit=no_jit):
          model = create_fn(pretrained=pretrained, **kwargs)
  
      if checkpoint_path:
          load_checkpoint(model, checkpoint_path)
  
      return model
  