The implementation adds a few special read-only attributes to several
object types, where they are relevant. Some of these are not reported
by the dir() built-in function.
__dict__
A dictionary or other mapping object used to store an
object's (writable) attributes.
__methods__
Deprecated since release 2.2.
Use the built-in function dir() to get a
list of an object's attributes. This attribute is no longer available.
__members__
Deprecated since release 2.2.
Use the built-in function dir() to get a
list of an object's attributes. This attribute is no longer available.
__class__
The class to which a class instance belongs.
__bases__
The tuple of base classes of a class object. If there are no base
classes, this will be an empty tuple.
