def manage_none_value(diff_result, column_list):
    """
    To handle None values,it appends Null to the missing column name in the
    result.

    Args:
        diff_result(list):Result of the datavalidation.
        column_list(list):List of column names of the table.

    Returns:
        Return the list of dictionaries with processed data.
    """
    processed_data = list()
    for each_dict in diff_result:
        temp_dict = dict()
        for each_key in column_list:
            temp_dict[each_key] = each_dict.get(each_key, None)
        processed_data.append(temp_dict)
    return processed_data