merging the global namespaces of two modules

[Fabrizio Pollastri]

Jeff wrote:
> Can you be more specific?  modA and modB don't import from each other
> but both need to access objects in the global namespace of what
> module?  The controlling application?

> Or do you mean that, for
> example, modA needs to access some functions in modB, but does not
> have import statements to do so, and you want the controlling program
> to do the imports for it?

Exactly this.

> If that is the case, that is bad
> programming practice in Python.  Python is not C and you can't just
> share header files :)

Ok. I know that I want a python import to behave like a C include, it is so bad?

The motivation arise from a family of applications that import, among others, 
two modules: a basic one and a specific one. The specific one is chosen from a 
set of modules at import time depending on other imported modules, so the basic 
module can known its external references against the specific module only at run 
time.

One solution can be:
-the application imports the basic module,
-the basic module selects the proper specific module among the allowable 
specific modules,
-the basic module imports the selected module with an __import__ call equivalent 
to "import selected_module_X as select_module",
-Any reference to the specific module in the basic module is written in the form 
"selected_module.object_name".

Any better solution?


Fabrizio.