diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7dc54f8..2158af6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,11 +17,5 @@ jobs:
         with:
           python-version: "3.10"
 
-      - name: Install ruff
-        run: pip install ruff
-
-      - name: Check syntax errors (E999) and undefined names (F821)
-        run: ruff check --select=E999,F821 .
-
       - name: Compile all .py files (catch SyntaxError)
         run: python -m compileall -q .
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7a60b85
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+__pycache__/
+*.pyc