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3.12 Special Attributes

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.

`__name__`
  The name of the class or type.