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/3034#issuecomment-516776060,https://api.github.com/repos/pydata/xarray/issues/3034,516776060,MDEyOklzc3VlQ29tbWVudDUxNjc3NjA2MA==,11731042,2019-07-31T09:38:02Z,2019-07-31T09:38:02Z,NONE,"@HasanAhmadQ7 You can have attributes of type list. See for instance this code:

```
from netCDF4 import Dataset
import numpy

f = Dataset(""example.nc"",""w"")
x = f.createDimension(""x"",3)
vlvar = f.createVariable(""test_var"", numpy.int32, (""x""))

# here create an attribute as a list
vlvar.test_attr = [""string a"", ""string b""]

vlvar[:] = numpy.arange(3)
f.close()
```

Having files with different values for the `test_attr` attribute will cause `open_mfdataset` to fail.

thanks for addressing this!","{""total_count"": 1, ""+1"": 1, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,457874038