ci: add lint workflow

.github/workflows/lint.yaml

@@ -0,0 +1,26 @@
+name: Lint
+on:
+  push:
+    paths:
+      - '**.py'
+jobs:
+  lint:
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - uses: abatilo/actions-poetry@v2
+        with:
+          poetry-version: "1.2.2"
+      - run: poetry config virtualenvs.create false
+      - run: poetry install
+      - run: isort --check .
+      - run: black --check .
+      - run: pylint catppuccin.py
+      - run: mypy .

.github/workflows/test.yaml

@@ -0,0 +1,23 @@
+name: Test
+on:
+  push:
+    paths:
+      - '**.py'
+jobs:
+  test:
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - uses: abatilo/actions-poetry@v2
+        with:
+          poetry-version: "1.2.2"
+      - run: poetry config virtualenvs.create false
+      - run: poetry install
+      - run: pytest --cov catppuccin

catppuccin.py

@@ -1,5 +1,6 @@
 """🐍 Soothing pastel theme for Python."""
 from dataclasses import dataclass
+from typing import Tuple
 
 
 @dataclass(frozen=True)
@@ -11,7 +12,7 @@ class Colour:
     blue: int
 
     @property
-    def rgb(self) -> tuple[int, int, int]:
+    def rgb(self) -> Tuple[int, int, int]:
         """Get the colour as a 3-tuple of red, green, and blue."""
         return (self.red, self.green, self.blue)