JavaScript-like Object in Python standard library?

Question

Quite often, I find myself wanting a simple, "dump" object in Python which behaves like a JavaScript object (ie, its members can be accessed either with .member or with ['member']).

Usually I'll just stick this at the top of the .py:

class DumbObject(dict):     def __getattr__(self, attr):         return self[attr]     def __stattr__(self, attr, value):         self[attr] = value 

But that's kind of lame, and there is at least one bug with that implementation (although I can't remember what it is).

So, is there something similar in the standard library?

And, for the record, simply instanciating object doesn't work:

 >>> obj = object() >>> obj.airspeed = 42 Traceback (most recent call last):   File "", line 1, in  AttributeError: 'object' object has no attribute 'airspeed' 

Edit: (dang, should have seen this one coming)… Don't worry! I'm not trying to write JavaScript in Python. The place I most often find I want this is while I'm still experimenting: I have a collection of "stuff" that doesn't quite feel right to put in a dictionary, but also doesn't feel right to have its own class.

Answer 1

In Python 3.3+ you can use SimpleNamespace, which does exactly what you're looking for:

from types import SimpleNamespace obj = SimpleNamespace() obj.airspeed = 42 

https://docs.python.org/3.4/library/types.html#types.SimpleNamespace

Answer 2

You can try with attrdict:

class attrdict(dict):     def __init__(self, *args, **kwargs):         dict.__init__(self, *args, **kwargs)         self.__dict__ = self  a = attrdict(x=1, y=2) print a.x, a.y print a['x'], a['y']  b = attrdict() b.x, b.y  = 1, 2 print b.x, b.y print b['x'], b['y']