python - 'str' 对象没有属性 '__dict__'

Question

我想在 Python 中将字典序列化为 JSON。我有这个 'str' object has no attribute 'dict' 错误。这是我的代码...

from django.utils import simplejson

class Person(object):
    a = ""

person1 = Person()
person1.a = "111"

person2 = Person()
person2.a = "222"

list = {}
list["first"] = person1
list["second"] = person2

s = simplejson.dumps([p.__dict__ for p in list])

异常(exception)情况是；

Traceback (most recent call last):
  File "/base/data/home/apps/py-ide-online/2.352580383594527534/shell.py", line 380, in post
    exec(compiled_code, globals())
  File "<string>", line 17, in <module>
AttributeError: 'str' object has no attribute '__dict__'

Answer 1

怎么样

s = simplejson.dumps([p.__dict__ for p in list.itervalues()])