Question

import v_framework as framework
framework.loadModules(["Maintenance"])
framework.Maintenance.showPage()

In framework I have:

def loadModules(aModules):
    d_utility = {"Maintenance":"COOl_M_PAGE"}
    for module in a_aModules:
        exec("import " + d_utility[module] + " as " + module)

When loadModules is executed, it imports the modules in the v_framework namespace. Since I am importing v_framework as framework, I think I should be able to use the imported module using framework.Maintenance. But it does not work that way.
Is there a way to do way to do what I’m trying to do? Alternatively, is there any way to import modules in a namespace other than the one where exec is executed?

Answer 1

There are libraries for importing modules dynamically. You could use importlib (and another one that might be useful is pkgutil). Now, for your case, I guess this would do the job:

import importlib
mods = {}
def loadModules(aModule):
    global mods
    mods[module] = importlib.import_module(d_utility[module])
    # or maybe globals()[module] = ... would work also (exactly as you expect it to

UPDATE: exec modifies the function’s local namespace, not the global one (I think).

Hope it helps. 🙂