html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,performed_via_github_app,issue
https://github.com/pydata/xarray/issues/1727#issuecomment-345423843,https://api.github.com/repos/pydata/xarray/issues/1727,345423843,MDEyOklzc3VlQ29tbWVudDM0NTQyMzg0Mw==,6815844,2017-11-18T07:09:40Z,2017-11-18T07:09:40Z,MEMBER,"@shoyer 
Thanks. Confirmed.
Closing.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,275033174
https://github.com/pydata/xarray/issues/1727#issuecomment-345423506,https://api.github.com/repos/pydata/xarray/issues/1727,345423506,MDEyOklzc3VlQ29tbWVudDM0NTQyMzUwNg==,6815844,2017-11-18T07:01:51Z,2017-11-18T07:01:51Z,MEMBER,"Thanks @shoyer .
I think I should close the issue in jedi.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,275033174
https://github.com/pydata/xarray/issues/1727#issuecomment-345422593,https://api.github.com/repos/pydata/xarray/issues/1727,345422593,MDEyOklzc3VlQ29tbWVudDM0NTQyMjU5Mw==,6815844,2017-11-18T06:39:07Z,2017-11-18T06:39:07Z,MEMBER,"It seems jedi's bug.

A minimal working example is
1. Save following as example.py
```python
import traceback

class ExampleClass(object):
    def __init__(self):
        pass

    @property
    def value(self):
        print('value called')
        print(traceback.print_exc())
```
2. In IPython, do
```python
In [1]: import example

In [2]: ex = example.ExampleClass()

In [3]: ex.val  -> press [Tab]
value called
Traceback (most recent call last):
None
KeyError: (('value',), frozenset())
  File ""/home/keisukefujii/anaconda3/envs/tensorflow/lib/python3.5/site-packages/jedi/cache.py"", line 119, in wrapper
    return dct[key]
  File ""/home/keisukefujii/anaconda3/envs/tensorflow/lib/python3.5/site-packages/jedi/cache.py"", line 46, in wrapper
    return getattr(self, name)
value called
None
AttributeError: 'CompiledName' object has no attribute '_infer'
Traceback (most recent call last):
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,275033174
https://github.com/pydata/xarray/issues/1727#issuecomment-345411599,https://api.github.com/repos/pydata/xarray/issues/1727,345411599,MDEyOklzc3VlQ29tbWVudDM0NTQxMTU5OQ==,6815844,2017-11-18T02:22:35Z,2017-11-18T02:22:57Z,MEMBER,"I found this happens with IPython=6.1.0, but does not with IPython=5.1.0.
Maybe it is the upstream issue.

But if we can avoid this within xarray, it would be great,","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,275033174
https://github.com/pydata/xarray/issues/1727#issuecomment-345408881,https://api.github.com/repos/pydata/xarray/issues/1727,345408881,MDEyOklzc3VlQ29tbWVudDM0NTQwODg4MQ==,6815844,2017-11-18T01:45:30Z,2017-11-18T01:45:30Z,MEMBER,"Thanks. 
This is reproduced also in my environment.
It's strange ...
Tagged as a bug.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,275033174
https://github.com/pydata/xarray/issues/1727#issuecomment-345406561,https://api.github.com/repos/pydata/xarray/issues/1727,345406561,MDEyOklzc3VlQ29tbWVudDM0NTQwNjU2MQ==,6815844,2017-11-18T01:17:44Z,2017-11-18T01:17:44Z,MEMBER,"Your `xr.Dataset` consists only from a single coordinate variable
```python
<xarray.Dataset>
Dimensions:  (myvar: 100000000)
Coordinates:
  * myvar    (myvar) float64 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 ...
Data variables:
    *empty*
```
(This behavior is somehow confusing...)

In `xarray`, coordinate variables are always loaded into memory.

The following example works well

```python
In [1]: import xarray as xr
   ...: import numpy as np
   ...: ds = xr.Dataset({'myvar': (('x', 'y'), np.arange(100000000).reshape(1000
   ...: , 100000))},
   ...:                 coords={'x': np.arange(1000)})
   ...: ds.to_netcdf('test.nc')
   ...: 

In [2]: ds_on_disk = xr.open_dataset('test.nc')
   ...: ds_on_disk['myvar'].variable._in_memory
   ...: 
Out[2]: False

In [3]: ds_on_disk.my  # -> [Tab]
In [3]: ds_on_disk.myvar.variable._in_memory
   ...: 
Out[3]: False

In [4]: ds_on_disk['x'].variable._in_memory
Out[4]: True
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,275033174