Question

我正在使用python创建应用程序。我发出HTTP请求并获得以下结果：

{
    "companies": {
        "company": [
            {
                "createDt": "2014-01-18T00:00:00+01:00",
                "dbNazev": "sveatlo_s_r_o_",
                "id": "1",
                "licenseGroup": "null",
                "nazev": "Sveatlo s.r.o.",
                "show": "true",
                "stavEnum": "ESTABLISHED",
                "watchingChanges": "false"
            },
            {
                "createDt": "2014-01-20T00:00:00+01:00",
                "dbNazev": "hajocka",
                "id": "2",
                "licenseGroup": "null",
                "nazev": "HÃ¡joÄka",
                "show": "true",
                "stavEnum": "ESTABLISHED",
                "watchingChanges": "false"
            }
        ]
    }
}

然后我在for循环中处理数据。问题是响应也可能如下所示：

{
    "companies": {
        "company": {
            "createDt": "2014-01-18T00:00:00+01:00",
            "dbNazev": "sveatlo_s_r_o_",
            "id": "1",
            "licenseGroup": "null",
            "nazev": "Sveatlo s.r.o.",
            "show": "true",
            "stavEnum": "ESTABLISHED",
            "watchingChanges": "false"
        }
    }
}

目前我在每次请求之后检查它是否是数组，但我觉得这不是最好的方法。有人可以帮我找一个更好的解决方案吗？

感谢您的回答。

编辑：我无法更改服务器的响应

Answer 1

规范化您正在分析的信息。这可以防止你不得不重复自己：

假设您的数据可能如下所示：

some_json_data = {"companies": {"foo": 1}}

或者像这样：

some_json_data = {"companies": [{"foo": 1}]}

因此，在解析json数据时，请执行以下操作：

i_expect_an_array = some_json_data['companies']
if not isinstance(i_expect_an_array, list):
    i_expect_an_array = (i_expect_an_array,)

# Now, you can process the data as you normally would

不需要两个具有相似外观代码的独立块。

Answer 2

将not list转换为list或tuple然后循环：

def make_list(item):
    if not isinstance(item, (list, tuple)):
        return [item]
    return list(item)

for company in make_list(data['companies']['company']):
    process_company(company)

对象/数组中的FOR循环

2 个答案: