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
1068680815,PR_kwDOAMm_X84vQ2hE,6037,Fix wrong typing for tolerance in reindex,57914115,closed,0,,,6,2021-12-01T17:19:08Z,2022-01-15T17:28:08Z,2022-01-15T17:27:56Z,CONTRIBUTOR,,0,pydata/xarray/pulls/6037,"In the `xarray.core.dataset.py `module, more particulary in the reindex method the tolerance argument is set to be a `Number`

https://github.com/pydata/xarray/blob/f08672847abec18f46df75e2f620646d27fa41a2/xarray/core/dataset.py#L2743

But the `_reindex`  function call  `reindex_variable` function. In the `reindex_variable`  the type for tolerance is `Any`. This function ends to call `get_indexer_nd` which call the pandas function `get_indexer` :

https://github.com/pydata/xarray/blob/f08672847abec18f46df75e2f620646d27fa41a2/xarray/core/indexes.py#L137

In pandas the type of tolerance according to the docs can be a scalar or a list-like object

- [x] Tests added
- [x] Passes `pre-commit run --all-files`
- [x] User visible changes (including notable bug fixes) are documented in `whats-new.rst`
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