Add isort config

Author: dstansby

.pre-commit-config.yaml

@@ -41,3 +41,10 @@ repos:
           "--skip",
           "doc/users/project/credits.rst"
           ]
+
+  - repo: https://github.com/pycqa/isort
+    rev: 5.12.0
+    hooks:
+      - id: isort
+        name: isort (python)
+        files: ^tutorials/|^examples/

pyproject.toml

@@ -6,3 +6,12 @@ requires = [
     "pybind11>=2.6",
     "setuptools_scm>=7",
 ]
+
+
+[tool.isort]
+known_mpltoolkits = "mpl_toolkits"
+known_pydata = "numpy, matplotlib.pyplot"
+known_firstparty = "matplotlib"
+sections = "FUTURE,STDLIB,THIRDPARTY,PYDATA,FIRSTPARTY,MPLTOOLKITS,LOCALFOLDER"
+no_lines_before = "MPLTOOLKITS"
+force_sort_within_sections = true