def _getdb(scheme, host, params):
    try:
        module = import_module('stdnet.backends.%sb' % scheme)
    except __HOLE__:
        raise NotImplementedError
    return getattr(module, 'BackendDataServer')(scheme, host, **params)
dataset/ETHPy150Open lsbardel/python-stdnet/stdnet/backends/__init__.py/_getdb