from globus_sdk.response import GlobusResponse, GlobusHTTPResponse
from globus_sdk.transfer import TransferClient
from globus_sdk.nexus import NexusClient
from globus_sdk.auth import AuthClient

from globus_sdk.exc import GlobusError, GlobusAPIError, TransferAPIError

__version__ = "0.1"

__all__ = ["GlobusResponse", "GlobusHTTPResponse",
           "TransferClient", "NexusClient", "AuthClient",
           "GlobusError", "GlobusAPIError", "TransferAPIError"]

from globus_sdk.response import GlobusResponse, GlobusHTTPResponse
from globus_sdk.transfer import TransferClient
from globus_sdk.auth import AuthClient

from globus_sdk.exc import GlobusError, GlobusAPIError, TransferAPIError

__version__ = "0.1"

__all__ = ["GlobusResponse", "GlobusHTTPResponse",
           "TransferClient", "NexusClient", "AuthClient",
           "GlobusError", "GlobusAPIError", "TransferAPIError"]

Fix oversight, remove NexusClient in __init__.py