Thanks for the suggestion! Installing both latest master of xarray (0092911) and latest master of pydap (4ae73e3) fixed this issue, and now I can open the dataset.

I'm also using the same commit version.

Can you try to update pydap?

1775 was caused by the update of pydap. This issue might be also.

After pulling (Git says ‘Already up-to-date.’), my xarray version (xarray.__version__) is still '0.10.0+dev44.g0a0593d'. What version are you using?

It looks like you are using the older version than #1775. Could you try this again? git pull git checkout master python setup.py develop

Same thing: ``` Traceback (most recent call last): File "C:\Anaconda3\envs\xa_test\lib\site-packages\pydap\model.py", line 295, in getattr return self[attr] File "C:\Anaconda3\envs\xa_test\lib\site-packages\pydap\model.py", line 556, in getitem return StructureType.getitem(self, key) File "C:\Anaconda3\envs\xa_test\lib\site-packages\pydap\model.py", line 326, in getitem return self._dict[key] KeyError: 'shape'

During handling of the above exception, another exception occurred:

Traceback (most recent call last): File "C:\Anaconda3\envs\xa_test\lib\site-packages\pydap\model.py", line 180, in getattr return self.attributes[attr] KeyError: 'shape'

During handling of the above exception, another exception occurred:

Traceback (most recent call last): File "<stdin>", line 1, in <module> File "c:\src\xarray\xarray\backends\api.py", line 305, in open_dataset return maybe_decode_store(store, lock) File "c:\src\xarray\xarray\backends\api.py", line 225, in maybe_decode_store drop_variables=drop_variables) File "c:\src\xarray\xarray\conventions.py", line 598, in decode_cf vars, attrs = obj.load() File "c:\src\xarray\xarray\backends\common.py", line 133, in load for k, v in self.get_variables().items()) File "c:\src\xarray\xarray\backends\pydap_.py", line 85, in get_variables for k in self.ds.keys()) File "c:\src\xarray\xarray\core\utils.py", line 309, in FrozenOrderedDict return Frozen(OrderedDict(args, *kwargs)) File "c:\src\xarray\xarray\backends\pydap_.py", line 85, in <genexpr> for k in self.ds.keys()) File "c:\src\xarray\xarray\backends\pydap_.py", line 79, in open_store_variable data = indexing.LazilyIndexedArray(PydapArrayWrapper(var)) File "c:\src\xarray\xarray\core\indexing.py", line 482, in init key = BasicIndexer((slice(None),) * array.ndim) File "c:\src\xarray\xarray\core\utils.py", line 428, in ndim return len(self.shape) File "c:\src\xarray\xarray\backends\pydap_.py", line 20, in shape return self.array.shape File "C:\Anaconda3\envs\xa_test\lib\site-packages\pydap\model.py", line 297, in getattr return DapType.getattr(self, attr) File "C:\Anaconda3\envs\xa_test\lib\site-packages\pydap\model.py", line 184, in getattr % (self.class, attr)) AttributeError: '<class 'pydap.model.GridType'>' object has no attribute 'shape' ```

I couldn't reproduce it (I guess I need a userid and password to access the data). Can you try this?

python url = 'http://test.opendap.org/opendap/hyrax/data/nc/bears.nc' actual = xr.open_dataset(url, engine='pydap')