TypeError: Object of type 'int32' is not JSON serializable ——已解决

Posted 2021-01-04 ^西江月$

将模型用flask封装，返回json时报错：TypeError: Object of type ‘int32‘ is not JSON serializable

网上搜索出的解决方案：重写json.JSONEncoder

class MyEncoder(json.JSONEncoder):
    def default(self, obj):
        if isinstance(obj, numpy.integer):
            return int(obj)
        elif isinstance(obj, numpy.floating):
            return float(obj)
        elif isinstance(obj, numpy.ndarray):
            return obj.tolist()
        else:
            return super(MyEncoder, self).default(obj)

 

json.dumps(data,cls=MyEncoder)