[Python-ideas] Class autoload

[Steven D'Aprano]

On Sat, Mar 03, 2018 at 02:33:36PM -0500, Terry Reedy wrote:

> def autoload(mod, cls, *args, **kwargs):
>     from mod import cls
>     return cls(*args, **kwargs)
> 
> obj = autoload(yourmodule, YourClass)

That won't work unless yourmodule and YourClass have already been 
imported, since you'll get NameError.

You need to pass the names as strings, something like:

# also untested
def autoload(mod, cls, *args, **kwargs):
    module = __import__(mod)  # or use importlib
    K = getattr(module, cls)
    return K(*args, **kwargs)

obj = autoload('yourmodule', 'YourClass')


-- 
Steve