issue_comments: 765031152

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https://github.com/pydata/xarray/pull/4818#issuecomment-765031152 https://api.github.com/repos/pydata/xarray/issues/4818 765031152 MDEyOklzc3VlQ29tbWVudDc2NTAzMTE1Mg== 10194086 2021-01-22T00:33:39Z 2021-01-22T00:33:39Z MEMBER

The following now works well

python import xarray as xr da = xr.DataArray([1]) reveal_type(xr.core.weighted.DataArrayWeighted(da, da).mean())

However, what I cannot get to work is:

python reveal_type(da.weighted(da)) (returns Any). What almost works is:

```python def weighted(self: T_DSorDA, weights: "DataArray") -> Weighted[T_DSorDA]:

return self._weighted_cls(self, weights)

```

However, mypy does not like that I overwrite the type of self with T_DSorDA...

 
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