Choose adapter dynamically depending on librarie(s) installed

Question

I am designing a library that has adapters that supports a wide-range of libraries. I want the library to dynamically choose which ever adapter that has the library it uses

Answer 1

The importlib.import_module might do what you need:

INSTALLED = ['syncronous', 'alternative']  

for mod_name in INSTALLED:
    try: 
        module = importlib.import_module('servicelibrary.simple.' + mod_name)
        Publisher = getattr(module, 'Publisher')

        if Publisher:
            break  # found, what we needed

    except ImportError:
        continue

I guess, this is not the most advance technique, but the idea should be clear. And you can take a look at the imp module as well.