Raising an exception on updating a 'constant' attribute in python

Question

As python does not have concept of constants, would it be possible to raise an exception if an \'constant\' attribute is updated? How?

class MyClass():
            


        

Answer 1

Start reading this:

http://docs.python.org/reference/datamodel.html#customizing-attribute-access

You basically write your own version of __setattr__ that throws exceptions for some attributes, but not others.