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/pull/2485#issuecomment-429903217,https://api.github.com/repos/pydata/xarray/issues/2485,429903217,MDEyOklzc3VlQ29tbWVudDQyOTkwMzIxNw==,1217238,2018-10-15T15:34:40Z,2018-10-15T15:34:40Z,MEMBER,"Just add a brief comment here summarizing this, e.g., ""# no longer used as
of pandas 0.23""

On Mon, Oct 15, 2018 at 5:36 AM Spencer Clark <notifications@github.com>
wrote:

> *@spencerkclark* commented on this pull request.
> ------------------------------
>
> In xarray/coding/cftimeindex.py
> <https://github.com/pydata/xarray/pull/2485#discussion_r225145820>:
>
> >          return CFTimeIndex(other + np.array(self))
>
>      def __sub__(self, other):
> -        return CFTimeIndex(np.array(self) - other)
> +        if isinstance(other, CFTimeIndex):
> +            return pd.TimedeltaIndex(np.array(self) - np.array(other))
> +        elif isinstance(other, pd.TimedeltaIndex):
> +            return CFTimeIndex(np.array(self) - other.to_pytimedelta())
> +        else:
> +            return CFTimeIndex(np.array(self) - other)
> +
> +    def _add_delta(self, deltas):
> +        # To support TimedeltaIndex + CFTimeIndex with older pandas versions
>
> Yes, this method is not needed with recent versions of pandas. I think the
> change that eliminated the need for it was in this PR:
> pandas-dev/pandas#19895 <https://github.com/pandas-dev/pandas/pull/19895>,
> which I guess would have made it into pandas version 0.23.0.
>
> I added it because of the failing test in the Windows 32-bit Python 2.7
> build that used pandas version 0.22.0. Should I just mark the test as an
> expected failure for versions of pandas less than 0.23 and remove this
> private method?
>
> —
> You are receiving this because you commented.
> Reply to this email directly, view it on GitHub
> <https://github.com/pydata/xarray/pull/2485#discussion_r225145820>, or mute
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>
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