function_summarizer_inpu_example.py

def cleanup_virtualenv(bare=True):
    if not bare:
        click.echo(crayons.red('Environment creation aborted.'))
    try:
        # Delete the virtualenv.
        rmtree(project.virtualenv_location)
    except OSError as e:
        click.echo(
            '{0} An error occurred while removing {1}!'.format(
                crayons.red('Error: ', bold=True),
                crayons.green(project.virtualenv_location),
            ),
            err=True,
        )
        click.echo(crayons.blue(e), err=True)

        
def mean_squared_error(y_true, y_pred,
                       sample_weight=None,
                       multioutput='uniform_average'):
  
    y_type, y_true, y_pred, multioutput = _check_reg_targets(
        y_true, y_pred, multioutput)
    check_consistent_length(y_true, y_pred, sample_weight)
    output_errors = np.average((y_true - y_pred) ** 2, axis=0,
                               weights=sample_weight)
    if isinstance(multioutput, string_types):
        if multioutput == 'raw_values':
            return output_errors
        elif multioutput == 'uniform_average':
            # pass None as weights to np.average: uniform mean
            multioutput = None

    return np.average(output_errors, weights=multioutput)