2.2.10 Special Attributes 
The implementation adds a few special read-only attributes to several
object types, where they are relevant:
- __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.
 
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