python obj2json,json2obj

In [56]: a=AA()

In [57]: a.__dict__
Out[57]: {}

In [58]: setattr(a,'c','3')

In [59]: a.__dict__
Out[59]: {'c': '3'}

class AA(object):
    def __int__(self, **kwargs):
        self.id = ""
        self.name = ""
        self.__dict__.update(kwargs)

    def update(self, **kwargs):
        self.__dict__.update(kwargs)


if __name__ == '__main__':
    # a = AA(**{"id": "2", "name": "dds"})
    a = AA()
    a.update(**{"id": "2", "name": "dds"})
    print(a.id)

def get_objs_file(file, clz):
    lane_group_json = file2json(file)
    objs = []
    for feature in lane_group_json['features']:
        proper = feature['properties']
        obj = clz()
        for k, v in proper.items():
            setattr(obj, k, v)
        objs.append(obj)
    return objs
lane_groups = get_objs_file(f"{base_dir}/lane_group.geojson", LaneGroup)

def obj2geojson(objs, file, wkt_field):
    features = []
    for d in objs:
        # gpd_data = {'id': d.id, 'geometry': d.drive_line}
        # gpd_data['geometry'] = from_wkt(gpd_data['drive_line'])
        # gpd_datas.append(gpd_data)
        obj_dict = d.__dict__
        geom = None
        if wkt_field:
            geom = from_wkt(obj_dict[wkt_field])
        feature = Feature(geometry=geom, properties=obj_dict )
        features.append(feature)
    fc = FeatureCollection(features)
    json2file(file, dumps(fc))