如何使对象可序列化?以下代码:
# -*- coding: utf-8 -*-
import json
import pickle
import bson
class A(object):
def __init__(self):
self.a = 'a'
def __reduce__(self):
return type(self), (self.a,)
try:
print(pickle.dumps({'a': A()})) # Ok
except Exception as exc:
print(exc)
try:
print(json.dumps({'a': A()})) # Error
except Exception as exc:
print(exc)
try:
print(bson.BSON.encode({'a': A()})) # Error
except Exception as exc:
print(exc)
产生
b'\x80\x03}q\x00X\x01\x00\x00\x00aq\x01c__main__\nA\nq\x02h\x01\x85q\x03Rq\x04s.'
<__main__.A object at 0x7f3a06fef048> is not JSON serializable
Cannot encode object: <__main__.A object at 0x7f3a06fef048>
我不想编写自己的JSON,BSON等序列化程序,我需要自己制作对象json / bson / ...序列化。
有可能吗?怎么样?