对字典中为None的值，重新设置默认值
    :param dict_item:
    :param default_value:
    :return:

def set_dict_none_default(dict_item, default_value):
    """
    对字典中为None的值，重新设置默认值
    :param dict_item:
    :param default_value:
    :return:
    """
    for (k, v) in iteritems(dict_item):
        if v is None:
            dict_item[k] = default_value