def getunpackers():
    path = __path__
    prefix = __name__ + '.'
    unpackers = []
    interface = ['unpack', 'detect', 'PRIORITY']
    for _importer, modname, _ispkg in pkgutil.iter_modules(path, prefix):
        if 'tests' not in modname and modname not in BLACKLIST:
            try:
                module = __import__(modname, fromlist=interface)
            except ImportError:
                raise UnpackingError('Bad unpacker: %s' % modname)
            else:
                unpackers.append(module)

    return sorted(unpackers, key = lambda mod: mod.PRIORITY)
Scans the unpackers dir, finds unpackers and add them to UNPACKERS list.
dataset/ETHPy150Open JT5D/Alfred-Popclip-Sublime/Sublime Text 2/JsFormat/libs/jsbeautifier/unpackers/__init__.py/getunpackers