Neat Trick for Loading Modules with unknown Name

[Randall Smith]

I've found an easy and clean way to load and use modules that are loaded 
after a program has started when the name of the module can not be 
pre-determined.

modname = 'usermodname'
# load the module
exec('import ' + modname)
# alias the module
usersmod = eval(modname)

Not you can use the module like this: usermod.def
Where def is some function, class, etc. defined in the module.

Very simple.  I stumbled on this for a while and even read some long, 
complex solutions involving using __import__, etc.  Just thought I'd share.

Randall