old_contents: import click
  
  from .loader import load_yaml
  from .blueprint import Blueprint
  from .exceptions import ValidationError, YAMLError
  
  
  def get_blueprint(*files):
      try:
          return Blueprint.from_description(load_yaml(*files))
      except (YAMLError, ValidationError) as e:
          raise click.ClickException(e.message)
      except Exception as e:
          pass
  
  
  @click.group()
  @click.version_option()
  def cli():
      pass
  
  
  @cli.command()
  @click.argument('files', nargs=-1)
  def predict(files):
      """
      Predict how many objects will be created if the given files are used.
      """
      blueprint = get_blueprint(*files)
  
      for item in blueprint:
          click.echo("{name}: {count} {by}".format(
              name=item.name, count=item.total,
              by="({} by {})".format(item.count.number, item.count.by)
                 if item.count.by else ""
          ))
  
new_contents: import click
  
  from .loader import load_yaml
  from .blueprint import Blueprint
  from .exceptions import ValidationError, YAMLError
  
  
  def get_blueprint(*files):
      try:
          return Blueprint.from_description(load_yaml(*files))
      except (YAMLError, ValidationError) as e:
          raise click.ClickException(e.message)
      except Exception as e:
          raise click.ClickException("Unexpected error during the blueprint "
                                     "loading: {}".format(e.message))
  
  
  @click.group()
  @click.version_option()
  def cli():
      pass
  
  
  @cli.command()
  @click.argument('files', nargs=-1)
  def predict(files):
      """
      Predict how many objects will be created if the given files are used.
      """
      blueprint = get_blueprint(*files)
  
      for item in blueprint:
          click.echo("{name}: {count} {by}".format(
              name=item.name, count=item.total,
              by="({} by {})".format(item.count.number, item.count.by)
                 if item.count.by else ""
          ))
  
subject: Handle unexpected errors properly in load_blueprint