linter and github action

Author: runrudyrun

.flake8

@@ -0,0 +1,14 @@
+[flake8]
+max-line-length = 120
+ignore = E203, E266, E501, W503
+select = B,C,E,F,W,T4,B9
+max-complexity = 18
+exclude =
+    .git,
+    __pycache__,
+    docs/source/conf.py,
+    old,
+    build,
+    dist
+per-file-ignores =
+    __init__.py:F401

.github/python-linter.yml

@@ -0,0 +1,19 @@
+name: Python Linter
+
+on: [push, pull_request]
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.x'
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install flake8
+    - name: Run linter
+      run: flake8 .