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README.md

@@ -14,7 +14,7 @@ that was more flexible than a single `xarray.Dataset` object.
 The initial motivation was to represent netCDF files / Zarr stores with multiple nested groups in a single in-memory object,
 but `datatree.DataTree` objects have many other uses.
 
-# :rotating_light: :bell: :warning: NO LONGER MAINTAINED :warning: :bell: :rotating_light: 
+# :rotating_light: :bell: :warning: NO LONGER MAINTAINED :warning: :bell: :rotating_light:
 
 **This repository has been archived and the code is no longer maintained!**
 

datatree/__init__.py

@@ -1,19 +1,20 @@
 import warnings
 
-warnings.warn(
-    "The repository `xarray-contrib/datatree` has been archived! It is no longer maintained as of October 2024. " \
-    "Datatree functionality has been migrated upstream to `pydata/xarray`, so please use `xarray.DataTree` instead. " \
-    "To help you migrate there is a guide at https://github.com/pydata/xarray/blob/main/DATATREE_MIGRATION_GUIDE.md",
-    DeprecationWarning,
-)
-
 # import public API
 from .datatree import DataTree
 from .extensions import register_datatree_accessor
 from .io import open_datatree
 from .mapping import TreeIsomorphismError, map_over_subtree
 from .treenode import InvalidTreeError, NotFoundInTreeError
 
+warnings.warn(
+    "The repository `xarray-contrib/datatree` has been archived! It is no longer maintained as of October 2024. "
+    "Datatree functionality has been migrated upstream to `pydata/xarray`, so please use `xarray.DataTree` instead. "
+    "To help you migrate there is a guide at https://github.com/pydata/xarray/blob/main/DATATREE_MIGRATION_GUIDE.md",
+    DeprecationWarning,
+)
+
+
 try:
     # NOTE: the `_version.py` file must not be present in the git repository
     #   as it is generated by setuptools at install time

datatree/datatree.py

@@ -177,8 +177,7 @@ def __getitem__(self, key: Hashable) -> DataArray:  # type: ignore[misc]
         ...
 
     @overload
-    def __getitem__(self, key: Any) -> Dataset:
-        ...
+    def __getitem__(self, key: Any) -> Dataset: ...
 
     def __getitem__(self, key) -> DataArray:
         # TODO call the `_get_item` method of DataTree to allow path-like access to contents of other nodes

datatree/formatting_html.py

@@ -22,9 +22,11 @@ def summarize_children(children: Mapping[str, Any]) -> str:
     lines_callback = lambda n, c, end: _wrap_repr(node_repr(n, c), end=end)
 
     children_html = "".join(
-        lines_callback(n, c, end=False)  # Long lines
-        if i < N_CHILDREN
-        else lines_callback(n, c, end=True)  # Short lines
+        (
+            lines_callback(n, c, end=False)  # Long lines
+            if i < N_CHILDREN
+            else lines_callback(n, c, end=True)
+        )  # Short lines
         for i, (n, c) in enumerate(children.items())
     )
 

datatree/iterators.py

@@ -60,8 +60,7 @@ def __next__(self) -> Iterator[Tree]:
 
     @staticmethod
     @abstractmethod
-    def _iter(children: List[Tree], filter_, stop, maxlevel) -> Iterator[Tree]:
-        ...
+    def _iter(children: List[Tree], filter_, stop, maxlevel) -> Iterator[Tree]: ...
 
     @staticmethod
     def _abort_at_level(level, maxlevel):

datatree/tests/test_datatree.py

@@ -166,8 +166,7 @@ def test_assign_when_already_child_with_variables_name(self):
             dt.ds = new_ds
 
 
-class TestGet:
-    ...
+class TestGet: ...
 
 
 class TestGetItem:
@@ -450,8 +449,7 @@ def test_setitem_dataarray_replace_existing_node(self):
         xrt.assert_identical(results.to_dataset(), expected)
 
 
-class TestDictionaryInterface:
-    ...
+class TestDictionaryInterface: ...
 
 
 class TestTreeFromDict: