解决TypeError: Object of type xxx is not JSON serializable错误问题

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

json.dumps(data, cls=MyEncoder) 

def dict_to_json(dict_obj,name, Mycls = None):
    js_obj = json.dumps(dict_obj, cls = Mycls, indent=4)
    with open(name, 'w') as file_obj:
        file_obj.write(js_obj)

def json_to_dict(filepath, Mycls = None):
    with open(filepath,'r') as js_obj:
        dict_obj = json.load(js_obj, cls = Mycls)
    return dict_obj

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

json.dumps(data, cls=NpEncoder)