code: def short_hash(name):
      if name not in _model_sha1:
          raise ValueError(
              "Pretrained model for {name} is not available.".format(
                  name=name
              )
          )
      return _model_sha1[name][:8]
  
imports: import os
  import zipfile
  from .download import download, check_sha1
label_desc: Use image node_id 1 for calling a global function with example usage: short_hash(name) and returns: _model_sha1