dask-xgboost-airlines.ipynb

Screencast: https://youtu.be/Cc4E-PdDSro
Github Issue: dmlc/xgboost#2032

Traceback (most recent call last):
  File "dask_xgb.py", line 79, in <module>
    train_model(data_train, labels_train)
  File "dask_xgb.py", line 67, in train_model
    bst = dxgb.train(client, params, data_train, labels_train)
  File "/usr/lib/python2.7/site-packages/dask_xgboost/core.py", line 169, in train
    labels, dmatrix_kwargs, **kwargs)
  File "/usr/lib/python2.7/site-packages/distributed/utils.py", line 253, in sync
    six.reraise(*error[0])
  File "/usr/lib/python2.7/site-packages/distributed/utils.py", line 238, in f
    result[0] = yield make_coro()
  File "/usr/lib/python2.7/site-packages/tornado/gen.py", line 1099, in run
    value = future.result()
  File "/usr/lib/python2.7/site-packages/tornado/concurrent.py", line 260, in result
    raise_exc_info(self._exc_info)
  File "/usr/lib/python2.7/site-packages/tornado/gen.py", line 1107, in run
    yielded = self.gen.throw(*exc_info)
  File "/usr/lib/python2.7/site-packages/dask_xgboost/core.py", line 134, in _train
    results = yield client._gather(futures)
  File "/usr/lib/python2.7/site-packages/tornado/gen.py", line 1099, in run
    value = future.result()
  File "/usr/lib/python2.7/site-packages/tornado/concurrent.py", line 260, in result
    raise_exc_info(self._exc_info)
  File "/usr/lib/python2.7/site-packages/tornado/gen.py", line 1107, in run
    yielded = self.gen.throw(*exc_info)
  File "/usr/lib/python2.7/site-packages/distributed/client.py", line 1385, in _gather
    traceback)
  File "/usr/lib/python2.7/site-packages/distributed/protocol/pickle.py", line 59, in loads
    return pickle.loads(x)
ImportError: No module named dask_xgboost.core

Is there any module named dask_xgboost.core? I have not find it.