使用python解析json的值

def query_json(json_content, query, delimiter='.'):
    raise_flag = False
    try:
        for key in query.split(delimiter):
            if isinstance(json_content, list):
                json_content = json_content[int(key)]
            elif isinstance(json_content, dict):
                json_content = json_content[key]
            else:
                raise_flag = True
    except (KeyError, ValueError, IndexError):
        raise_flag = True

    if raise_flag:
        err_msg = u"Failed to extract! => {}\n".format(query)
        raise Exception(err_msg)

    return json_content

使用：

if __name__ == '__main__':

    li1 = {"type": "vcg","id": {"11":1}}
    li2 = [{"type": "vcg","id": "VCG111304748293"},{"type": "vcg","id": "VCG111304748293"}]
    print(query_json(li1,'id.11'))
    print(query_json(li2,'0.type'))

输出：

1
vcg