run ruff in CI

.gitea/workflows/demo.yaml

@@ -1,19 +0,0 @@
-name: Gitea Actions Demo
-run-name: ${{ gitea.actor }} is testing out Gitea Actions 🚀
-on: [push]
-
-jobs:
-  Explore-Gitea-Actions:
-    runs-on: ubuntu-latest
-    steps:
-      - run: echo "🎉 The job was automatically triggered by a ${{ gitea.event_name }} event."
-      - run: echo "🐧 This job is now running on a ${{ runner.os }} server hosted by Gitea!"
-      - run: echo "🔎 The name of your branch is ${{ gitea.ref }} and your repository is ${{ gitea.repository }}."
-      - name: Check out repository code
-        uses: actions/checkout@v4
-      - run: echo "💡 The ${{ gitea.repository }} repository has been cloned to the runner."
-      - run: echo "🖥️ The workflow is now ready to test your code on the runner."
-      - name: List files in the repository
-        run: |
-          ls ${{ gitea.workspace }}
-      - run: echo "🍏 This job's status is ${{ job.status }}."

.gitea/workflows/tests.yaml

@@ -0,0 +1,23 @@
+name: CI/CD
+run-name: ${{ gitea.actor }} is testing out Gitea Actions 🚀
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+          cache: 'pip'
+      - run: pip install -r requirements.txt
+      - name: Install the code linting and formatting tool Ruff
+        run: pip install ruff
+      - name: Lint code with Ruff
+        run: ruff check --output-format=github --target-version=py39
+      - name: Check code formatting with Ruff
+        run: ruff format --diff --target-version=py39
+        continue-on-error: true

grid/ui/pattern.py

@@ -3,7 +3,6 @@ import math
 from typing import List, Tuple
 
 from PySide6.QtWidgets import QGraphicsItemGroup
-from random import randint
 
 from grid.ui.items import SphereGraphicsItem, ArcGraphicsItem, LineGraphicsItem