code: def _extract_variable_parts(variable_key, variable):
    
    name, offset, partitioned = None, None, False
    # pylint: disable=protected-access
    if variable._save_slice_info:
      name = variable_key[:variable_key.rfind("/")]
      if not variable._save_slice_info.full_name.endswith(name):
        raise RuntimeError("Unexpected handling of partitioned variable.")
      offset = variable._save_slice_info.var_offset[0]
      partitioned = True
    # pylint: enable=protected-access
    return partitioned, name, offset
docs: Matches a variable to individual parts.
  
    Args:
      variable_key: String identifier of the variable in the module scope.
      variable: Variable tensor.
  
    Returns:
      partitioned: Whether the variable is partitioned.
      name: Name of the variable up to the partitioning.
      offset: Offset of the variable into the full variable.
  
    Raises:
      RuntimeError: In case of unexpected variable format.