Merge branch 'main' into groupby-cumsum

* main:
  Pin version of black in pre-commit blackdoc (pydata#6492)
  Scale numfocus image in readme (pydata#6519)
  Use new importlib.metadata.entry_points interface where available. (pydata#6516)
  Add a badge for binder (pydata#6518)
  Bump codecov/codecov-action from 3.0.0 to 3.1.0 (pydata#6509)

.github/workflows/ci-additional.yaml

@@ -109,7 +109,7 @@ jobs:
              $PYTEST_EXTRA_FLAGS
 
       - name: Upload code coverage to Codecov
-        uses: codecov/codecov-action@v3.0.0
+        uses: codecov/codecov-action@v3.1.0
         with:
           file: ./coverage.xml
           flags: unittests,${{ matrix.env }}

.github/workflows/ci.yaml

@@ -104,7 +104,7 @@ jobs:
           path: pytest.xml
 
       - name: Upload code coverage to Codecov
-        uses: codecov/codecov-action@v3.0.0
+        uses: codecov/codecov-action@v3.1.0
         with:
           file: ./coverage.xml
           flags: unittests

.pre-commit-config.yaml

@@ -35,6 +35,7 @@ repos:
     hooks:
       - id: blackdoc
         exclude: "generate_reductions.py"
+        additional_dependencies: ["black==22.3.0"]
   - repo: https://github.com/PyCQA/flake8
     rev: 4.0.1
     hooks:

README.md

@@ -7,6 +7,7 @@
 [![image](https://img.shields.io/pypi/v/xarray.svg)](https://pypi.python.org/pypi/xarray/)
 [![image](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/python/black)
 [![image](https://zenodo.org/badge/DOI/10.5281/zenodo.598201.svg)](https://doi.org/10.5281/zenodo.598201)
+[![badge](https://img.shields.io/badge/launch-binder-579ACA.svg?logo=data:image/png;base64,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)](https://mybinder.org/v2/gh/pydata/xarray/main?urlpath=lab/tree/doc/examples/weather-data.ipynb)
 [![image](https://img.shields.io/twitter/follow/xarray_dev?style=social)](https://twitter.com/xarray_dev)
 
 **xarray** (formerly **xray**) is an open source project and Python
@@ -80,7 +81,7 @@ page](https://docs.xarray.dev/en/latest/contributing.html#).
 
 ## NumFOCUS
 
-[![image](https://numfocus.org/wp-content/uploads/2017/07/NumFocus_LRG.png)](https://numfocus.org/)
+<img src="https://numfocus.org/wp-content/uploads/2017/07/NumFocus_LRG.png" width="200" href="https://numfocus.org/">
 
 Xarray is a fiscally sponsored project of
 [NumFOCUS](https://numfocus.org), a nonprofit dedicated to supporting

xarray/backends/plugins.py

@@ -1,6 +1,7 @@
 import functools
 import inspect
 import itertools
+import sys
 import warnings
 from importlib.metadata import entry_points
 
@@ -95,7 +96,11 @@ def build_engines(entrypoints):
 
 @functools.lru_cache(maxsize=1)
 def list_engines():
-    entrypoints = entry_points().get("xarray.backends", ())
+    # New selection mechanism introduced with Python 3.10. See GH6514.
+    if sys.version_info >= (3, 10):
+        entrypoints = entry_points(group="xarray.backends")
+    else:
+        entrypoints = entry_points().get("xarray.backends", ())
     return build_engines(entrypoints)