Update lint_python.yml

.github/workflows/lint_python.yml

@@ -1,31 +1,11 @@
 name: lint_python
-on:
+on: [pull_request, push]
-  pull_request:
-  push:
-  #  branches: [master]
 jobs:
   lint_python:
     runs-on: ubuntu-latest
-    # strategy:
-    #  matrix:
-    #    os: [ubuntu-latest, macos-latest, windows-latest]
-    #    python-version: [2.7, 3.5, 3.6, 3.7, 3.8]  # , pypy3]
     steps:
-      - uses: actions/checkout@master
+      - uses: actions/checkout@v2
-      - uses: actions/setup-python@master
+      - uses: actions/setup-python@v2
-      # with:
+      - run: pip install codespell flake8
-      #   python-version: ${{ matrix.python-version }}
-      - run: pip install black codespell flake8 isort pytest reorder-python-imports
-      - run: black --check . || true
-      # - run: black --diff . || true
-      # - if: matrix.python-version >= 3.6
-      #  run: |
-      #    pip install black
-      #    black --check . || true
       - run: codespell --quiet-level=2 || true  # --ignore-words-list="" --skip=""
       - run: flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
-      # isort and reorder-python-imports are two ways of doing the same thing
-      - run: isort --recursive . || true
-      - run: reorder-python-imports . || true
-      - run: pip install -r requirements.txt || true
-      - run: pytest . || true