CommandRegister class

You can use the CommandRegister class to derive a general class that can be queried from the GUI. In addition, the class can notify the GUI when its contents change. For example, 

 class Block(CommandRegister): 
    def __init__(self, name, ...): 
        CommandRegister.__init__(self) 
        ...

If a query is registered by the GUI on an instance of this class, the GUI will be notified when a member of this instance is changed, added, or deleted, For more details on registering queries, see the Abaqus GUI Toolkit Reference Guide.

If your object is to be stored in a repository (see below), the first argument to the constructor must be a string representing the name of the object. That string will automatically be assigned by the infrastructure to a member called name.