Python simple naked objects

Question

What's the easiest way to create a naked object that I can assign attributes to? The specific use case is: I'm doing various operations on a Django object instance, but sometimes the instance is None (there is on instance). In this case I'd like to create the simplest possible fake object such that I can assign values to its attributes (eg. `myobject.foo = 'bar'`). Basically I'm looking for the Python equivalent of this piece of Javascript: ``` myobject = {} myobject.foo = 'bar' ``` I know I can use a mock object/library for this, but I'm hoping for a very simple solution (as simple as the Javascript above). Is there a way to create a naked object instance? Something like: ``` myobject = object() myobject.foo = 'bar' ```

Accepted Answer

You need to create a simple class first:

```
class Foo(object):
    pass

myobject = Foo()
myobject.foo = 'bar'
```

You can make it a one-liner like this:

```
myobject = type("Foo", (object,), {})()
myobject.foo = 'bar'
```

The call to `type` functions identically to the previous `class` statement.

If you want to be really minimal...

```
myobject = type("", (), {})()
```

The key is that the built-in types (such as `list` and `object`) don't support user-defined attributes, so you need to create a type using either a `class` statement or a call to the 3-parameter version of `type`.

Python simple naked objects

Solution

Problem