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From: Pavel Volkov <sailor@lists.xtsubasa.org>
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Subject: =?iso-8859-1?Q?object().=5F=5Fdict=5F=5F?=
Date: Wed, 23 Apr 2014 09:39:04 +0400
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Xref: csiph.com comp.lang.python:70528

There are some basics about Python objects I don't understand.
Consider this snippet:

>>> class X: pass
...=20
>>> x =3D X()
>>> dir(x)
['__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__',=20
'__format__', '__ge__', '__getattribute__', '__gt__', '__hash__',=20
'__init__', '__le__', '__lt__', '__module__', '__ne__', '__new__',=20
'__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__',=20
'__str__', '__subclasshook__', '__weakref__']
>>> x.foo =3D 11

And now I want to make a simple object in a shorter way, without declaring=20=

X class:

>>> y =3D object()
>>> dir(y)
['__class__', '__delattr__', '__dir__', '__doc__', '__eq__', '__format__',=20=

'__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__le__',=20
'__lt__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__',=20
'__setattr__', '__sizeof__', '__str__', '__subclasshook__']
>>> y.foo =3D 12
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'object' object has no attribute 'foo'

The attribute list is different now and there's no __dict__ and the object=20=

does not accept new attributes.
Please explain what's going on.