def get_missing_columns(missing_data):
    """
    Returns columns names as list that containes missing data 
    :param
        missing_data : return of missing_data(df)
    :return
        list: list containing columns with missing data
    """
    missing_data = missing_data[missing_data['percent'] > 0]
    missing_columns = missing_data.index.tolist()
    return missing_columns