def METHOD_NAME(df: pd.DataFrame, col_name: Text,
                      values: Sequence[Any]) -> pd.DataFrame:
  """Adds pretty column for the specified column name with values provided.
  Args:
    df: Dataframe to add column to.
    col_name: Name of the original column.
    values: Values of the pretty column to add.
  Returns:
    Dataframe with the pretty column added.
  """
  if col_name not in df.columns:
    return df
  pretty_col_name = '{}.pretty'.format(col_name)
  if pretty_col_name in df.columns:
    df[pretty_col_name] = values
  else:
    df.insert(
        df.columns.get_loc(col_name) + 1, pretty_col_name, pd.Series(values))
  return df