[pre-commit.ci] pre-commit autoupdate (#227)

* [pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/psf/black: 23.7.0 → 23.9.1](psf/black@23.7.0...23.9.1)
- [github.com/pycqa/flake8: 6.0.0 → 6.1.0](PyCQA/flake8@6.0.0...6.1.0)

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* use `is` to compare types

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Justus Magin <keewis@posteo.de>

.pre-commit-config.yaml

@@ -17,18 +17,18 @@ repos:
  - id: isort
  # https://github.com/python/black#version-control-integration
  - repo: https://github.com/psf/black
- rev: 23.7.0
+ rev: 23.9.1
  hooks:
  - id: black
  - id: black-jupyter
  - repo: https://github.com/keewis/blackdoc
  rev: v0.3.8
  hooks:
  - id: blackdoc
- additional_dependencies: ["black==23.7.0"]
+ additional_dependencies: ["black==23.9.1"]
  - id: blackdoc-autoupdate-black
  - repo: https://github.com/pycqa/flake8
- rev: 6.0.0
+ rev: 6.1.0
  hooks:
  - id: flake8
  - repo: https://github.com/kynan/nbstripout

pint_xarray/tests/utils.py

@@ -76,7 +76,7 @@ def assert_slice_equal(a, b):
 def assert_indexer_equal(a, b):
  __tracebackhide__ = True
 
- assert type(a) == type(b)
+ assert type(a) is type(b)
  if isinstance(a, slice):
  assert_slice_equal(a, b)
  elif isinstance(a, DataArray):