add .pre-commit-config.yaml

Author: shenxianpeng

.flake8

@@ -37,7 +37,7 @@ jobs:
         pip install .
         pip install -r requirements-dev.txt
     - name: Lint with flake8
-      run: flake8 .
+      run: flake8 --max-line-length=120
     - name: Run tests and collect coverage
       run: |
         coverage run --source=tests,clang_tools -m pytest

.github/workflows/python-test.yml

@@ -0,0 +1,35 @@
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: 1f6de3d70391131fac4b911ae913c568e571e34e
+    hooks:
+      - id: trailing-whitespace
+        exclude: \.output
+      - id: end-of-file-fixer
+        exclude: \.(cp?p?$|output)
+      - id: check-docstring-first
+      - id: check-added-large-files
+      - id: check-yaml
+      - id: debug-statements
+      - id: requirements-txt-fixer
+  - repo: https://github.com/asottile/reorder_python_imports
+    rev: v3.7.0
+    hooks:
+      - id: reorder-python-imports
+        language_version: python3
+  - repo: https://github.com/asottile/pyupgrade
+    rev: v1.16.1
+    hooks:
+      - id: pyupgrade
+  - repo: https://github.com/pycqa/flake8
+    rev: '4.0.1'
+    hooks:
+      - id: flake8
+        args: [--max-line-length=120]
+  - repo: local
+    hooks:
+      - id: tests
+        name: tests
+        entry: bash -c "pip install . && pytest -v -xxx"
+        description: Run all tests
+        language: system
+        types: [python]