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/6226#issuecomment-1026754743,https://api.github.com/repos/pydata/xarray/issues/6226,1026754743,IC_kwDOAMm_X849Mwi3,10580038,2022-02-01T11:43:21Z,2022-02-01T11:44:32Z,CONTRIBUTOR,"Are we expecting the `CFTimeIndex` object to always have  ""O"" as dtype? If so the solution would be straight forward. Which means I can create a PR.","{""total_count"": 1, ""+1"": 1, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1120276279
https://github.com/pydata/xarray/issues/6226#issuecomment-1026656699,https://api.github.com/repos/pydata/xarray/issues/6226,1026656699,IC_kwDOAMm_X849MYm7,10580038,2022-02-01T09:52:39Z,2022-02-01T09:52:39Z,CONTRIBUTOR,"I just ran into the very same issue. Are you sure that this is a problem with pandas? I've had a look into the pandas changes between 1.3.X and 1.4.X.  Apparently the [`_new_Index`](https://github.com/pandas-dev/pandas/blob/2bb20bbf594d93d2b09f345599c6f5a7245fdc66/pandas/core/indexes/base.py#L234) method, which gets involved when serialising the index object, has been changed:

```
    elif ""dtype"" not in d and ""data"" in d:
        # Prevent Index.__new__ from conducting inference;
        #  ""data"" key not in RangeIndex
        d[""dtype""] = d[""data""].dtype
    return cls.__new__(cls, **d)
```

the problem is, that [`__new__`](https://github.com/pydata/xarray/blob/86328a1cfe5296f8e478b17e52ba884db2384872/xarray/coding/cftimeindex.py#L313) doesn't except a `dtype` argument. I've tried adding a `dtype` argument and it works. So I guess since this class inherits from `pd.Index` it needs to be updated?","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1120276279