add precommit

.pre-commit-config.yaml

@@ -0,0 +1,33 @@
+
+files: '\.(py|rst|sh)$'
+fail_fast: false
+
+repos:
+-   repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v3.2.0
+    hooks:
+    -   id: trailing-whitespace
+    -   id: end-of-file-fixer
+    -   id: check-yaml
+    #-   id: check-executables-have-shebangs
+    -   id: check-ast
+
+-   repo: https://github.com/pycqa/flake8
+    rev: 6.1.0
+    hooks:
+    -   id: flake8
+        args: ["-j8", "--ignore=E203,E501,W503,E722", "--max-line-length=120", "--exit-zero"]
+
+-   repo: https://github.com/psf/black
+    rev: 22.10.0
+    hooks:
+    -   id: black
+        args: ["--line-length=120"]
+        exclude: E501
+
+-   repo: https://github.com/pycqa/isort
+    rev: 5.12.0
+    hooks:
+      - id: isort
+        args: ["--profile", "black"] # solves conflicts between black and isort
+