issues

Table actions

2 rows where user = 2745737 sorted by updated_at descending

✎ View and edit SQL

This data as json, CSV (advanced)

Suggested facets: created_at (date), updated_at (date), closed_at (date)

type 2

state 1

repo 1

id node_id number title user state locked assignee milestone comments created_at updated_at ▲ closed_at author_association active_lock_reason draft pull_request body reactions performed_via_github_app state_reason repo type
431413706 MDExOlB1bGxSZXF1ZXN0MjY5MDkxMTky 2883 Indexing with an empty array mdavezac 2745737 closed 0     1 2019-04-10T10:01:24Z 2019-04-12T00:25:47Z 2019-04-12T00:25:44Z CONTRIBUTOR   0 pydata/xarray/pulls/2883

Adds indexing over empty lists, e.g. da[[]].

  • [x] Closes #2882
  • [x] Tests added
  • [x] Fully documented, including whats-new.rst for all changes and api.rst for new API
 
{
    "url": "https://api.github.com/repos/pydata/xarray/issues/2883/reactions",
    "total_count": 0,
    "+1": 0,
    "-1": 0,
    "laugh": 0,
    "hooray": 0,
    "confused": 0,
    "heart": 0,
    "rocket": 0,
    "eyes": 0
}
     xarray 13221727 pull
431412346 MDU6SXNzdWU0MzE0MTIzNDY= 2882 Indexing with an empty sequence results in an exception mdavezac 2745737 closed 0     0 2019-04-10T09:58:24Z 2019-04-12T00:25:44Z 2019-04-12T00:25:44Z CONTRIBUTOR      

Code Sample, a copy-pastable example if possible

A "Minimal, Complete and Verifiable Example" will make it much easier for maintainers to help you: http://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports

```python

Your code here

da = DataArray(np.arange(12).reshape((3, 4)), dims=['x', 'y']) da[{'x': [0]}] # Okay da[{'x': []}] # error ```

Problem description

Indexing with an empty list results in an exception.

Expected Output

It should return a dataarray with an axis of length zero.

Output of xr.show_versions()

# Paste the output here xr.show_versions() here commit: 2c10d1443bea09e5ef53e5a7e35195a195e193a7 python: 3.7.3 (default, Mar 27 2019, 09:23:15) [Clang 10.0.1 (clang-1001.0.46.3)] python-bits: 64 OS: Darwin OS-release: 18.5.0 machine: x86_64 processor: i386 byteorder: little LC_ALL: en_GB.UTF-8 LANG: en_GB.UTF-8 LOCALE: en_GB.UTF-8 libhdf5: None libnetcdf: None xarray: 0.12.1+4.g2c10d144.dirty pandas: 0.24.2 numpy: 1.16.2 scipy: 1.2.1 netCDF4: None pydap: None h5netcdf: None h5py: None Nio: None zarr: None cftime: None nc_time_axis: None PseudonetCDF: None rasterio: None cfgrib: None iris: None bottleneck: 1.2.1 dask: None distributed: None matplotlib: 3.0.3 cartopy: None seaborn: None setuptools: 41.0.0 pip: 19.0.3 conda: None pytest: 4.3.1 IPython: 7.4.0 sphinx: None 
{
    "url": "https://api.github.com/repos/pydata/xarray/issues/2882/reactions",
    "total_count": 0,
    "+1": 0,
    "-1": 0,
    "laugh": 0,
    "hooray": 0,
    "confused": 0,
    "heart": 0,
    "rocket": 0,
    "eyes": 0
}
   completed xarray 13221727 issue

Advanced export

JSON shape: default, array, newline-delimited, object

CSV options: 

CREATE TABLE [issues] (
   [id] INTEGER PRIMARY KEY,
   [node_id] TEXT,
   [number] INTEGER,
   [title] TEXT,
   [user] INTEGER REFERENCES [users]([id]),
   [state] TEXT,
   [locked] INTEGER,
   [assignee] INTEGER REFERENCES [users]([id]),
   [milestone] INTEGER REFERENCES [milestones]([id]),
   [comments] INTEGER,
   [created_at] TEXT,
   [updated_at] TEXT,
   [closed_at] TEXT,
   [author_association] TEXT,
   [active_lock_reason] TEXT,
   [draft] INTEGER,
   [pull_request] TEXT,
   [body] TEXT,
   [reactions] TEXT,
   [performed_via_github_app] TEXT,
   [state_reason] TEXT,
   [repo] INTEGER REFERENCES [repos]([id]),
   [type] TEXT
);
CREATE INDEX [idx_issues_repo]
    ON [issues] ([repo]);
CREATE INDEX [idx_issues_milestone]
    ON [issues] ([milestone]);
CREATE INDEX [idx_issues_assignee]
    ON [issues] ([assignee]);
CREATE INDEX [idx_issues_user]
    ON [issues] ([user]);