diff --git a/.github/workflows/ruff.yml b/.github/workflows/ruff.yml
new file mode 100644
index 0000000..1a76151
--- /dev/null
+++ b/.github/workflows/ruff.yml
@@ -0,0 +1,35 @@
+name: Ruff Code Quality Check
+
+on: [ push, pull_request ]
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  ruff:
+    name: Ruff Check
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.11'
+          cache: 'pip'
+
+      - name: Install Ruff
+        run: |
+          pip install ruff
+
+      - name: Run Ruff check
+        run: |
+          ruff check . --output-format=github
+
+      - name: Check code formatting
+        run: |
+          ruff format --check . --diff
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..cac796c
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,29 @@
+[build-system]
+requires = ["setuptools>=61.0"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "your-project"
+version = "0.1.0"
+requires-python = ">=3.8"
+
+[tool.ruff]
+target-version = "py311"
+line-length = 100
+cache-dir = ".ruff_cache"
+select = ["E", "W", "F", "I", "N", "UP", "B", "C4", "SIM", "ARG"]
+ignore = ["E501"]
+
+[tool.ruff.per-file-ignores]
+"__init__.py" = ["F401"]
+"tests/**/*.py" = ["S101", "SLF001"]
+"**/migrations/**/*.py" = ["ALL"]
+
+[tool.ruff.format]
+indent-style = "space"
+quote-style = "double"
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]
+addopts = ["-v", "--tb=short"]
+python_files = ["test_*.py"]
diff --git a/src/euclid.py b/src/euclid.py
index 6e2e340..ef06357 100644
--- a/src/euclid.py
+++ b/src/euclid.py
@@ -2,10 +2,12 @@ def evkl(a, b):
     if a == 0:
         return b, 0, 1
     else:
-        nod, x, y= evkl(b%a, a)
-        return nod, y-(b//a)*x, x
+        nod, x, y = evkl(b % a, a)
+        return nod, y - (b // a) * x, x
+
+
 a = int(input())
 b = int(input())
 nod, x, y = evkl(a, b)
-print(f'НОД({a}, {b}) = {nod}')
-print(f'линейная комбинация: {a}*{x} + {b}*{y} = {nod}')
+print(f"НОД({a}, {b}) = {nod}")
+print(f"линейная комбинация: {a}*{x} + {b}*{y} = {nod}")