Basic attribute processing

By default, any class we create will permit the following four behaviors with respect to attributes:

• To create a new attribute by setting its value

• To set the value of an existing attribute

• To get the value of an attribute

• To delete an attribute

We can experiment with this using something as simple as the following code. We can create a simple, generic class and an object of that class:

>>> class Generic:
...     pass
...     
>>> g= Generic()

The preceding code permits us to create, get, set, and delete attributes. We can easily create and get an attribute. The following are some examples:

>>> g.attribute= "value"
>>> g.attribute
'value'
>>> g.unset
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'Generic' object has no attribute 'unset'
>>> del g.attribute
>>> g.attribute
Traceback (most recent call last):
  File "<stdin>", line 1, in <module&gt...