Mypy Compatible type hints for cycler

.github/workflows/mypy.yml

@@ -0,0 +1,36 @@
+---
+
+name: Mypy
+
+on:
+  push:
+    branches-ignore:
+      - auto-backport-of-pr-[0-9]+
+      - v[0-9]+.[0-9]+.[0-9x]+-doc
+  pull_request:
+
+jobs:
+  test:
+    name: "Mypy"
+    runs-on: ubuntu-20.04
+
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Set up Python
+        uses: actions/setup-python@v4
+
+      - name: Install Python dependencies
+        run: |
+          python -m pip install --upgrade pip setuptools wheel
+          python -m pip install --upgrade mypy
+
+      - name: Install cycler
+        run: |
+          python -m pip install --no-deps .
+
+      - name: Run mypy
+        run: |
+          mypy cycler test_cycler.py

.github/workflows/reviewdog.yml

@@ -30,6 +30,6 @@ jobs:
           REVIEWDOG_GITHUB_API_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
           set -o pipefail
-          flake8 | \
+          flake8 --max-line-length 88 cycler | \
             reviewdog -f=pep8 -name=flake8 \
               -tee -reporter=github-check -filter-mode nofilter