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https://github.com/pydata/xarray/issues/3213#issuecomment-526733257 https://api.github.com/repos/pydata/xarray/issues/3213 526733257 MDEyOklzc3VlQ29tbWVudDUyNjczMzI1Nw== 923438 2019-08-30T20:10:43Z 2019-08-30T20:10:43Z NONE

I cloned the master branch and installed it using 'python setup.py develop'.

When I try to use the sparse data loading functionality as per python oo = xa.Dataset.from_dataframe( my_df, sparse=True ) I get the following error:

```

ModuleNotFoundError Traceback (most recent call last) <ipython-input-9-fce0ca6bc4c2> in <module> ----> 1 oo = xa.Dataset.from_dataframe( poly_df.iloc[:10000], sparse=True )

/mnt/local/xarray/xarray/core/dataset.py in from_dataframe(cls, dataframe, sparse) 4040 4041 if sparse: -> 4042 obj._set_sparse_data_from_dataframe(dataframe, dims, shape) 4043 else: 4044 obj._set_numpy_data_from_dataframe(dataframe, dims, shape)

/mnt/local/xarray/xarray/core/dataset.py in _set_sparse_data_from_dataframe(self, dataframe, dims, shape) 3936 self, dataframe: pd.DataFrame, dims: tuple, shape: Tuple[int, ...] 3937 ) -> None: -> 3938 from sparse import COO 3939 3940 idx = dataframe.index

ModuleNotFoundError: No module named 'sparse'

``` Any suggestions on what I need to do ?

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