Add support for ruff

pyproject.toml

@@ -172,6 +172,34 @@ skip_gitignore = true
 skip = "pytensor/version.py"
 skip_glob = "**/*.pyx"
 
+[tool.ruff]
+select=["C","E","F","W"]
+ignore=["E501","E741","C408","C901"]
+exclude = [
+    "doc/",
+    "pytensor/_version.py",
+    "bin/pytensor_cache.py",
+]
+
+[tool.ruff.per-file-ignores]
+# TODO: Get rid of these:
+    "**/__init__.py"=["F401","E402","F403"]
+    "pytensor/tensor/linalg.py"=["F401","F403"]
+    "pytensor/scalar/basic_scipy.py"=["E402","F403","F401"]
+    "pytensor/graph/toolbox.py"=["E402","F403","F401"]
+    "pytensor/link/jax/jax_dispatch.py"=["E402","F403","F401"]
+    "pytensor/link/jax/jax_linker.py"=["E402","F403","F401"]
+    "pytensor/sparse/sandbox/sp2.py"=["F401"]
+    "tests/tensor/test_math_scipy.py"=["E402"]
+    "tests/sparse/test_basic.py"=["E402"]
+    "tests/sparse/test_opt.py"=["E402"]
+    "tests/sparse/test_sp2.py"=["E402"]
+    "tests/sparse/test_utils.py"=["E402","F401"]
+    "tests/sparse/sandbox/test_sp.py"=["E402","F401"]
+    "tests/scalar/test_basic_sympy.py"=["E402"]
+    "pytensor/graph/rewriting/unify.py"=["F811"]
+
+
 [tool.mypy]
 ignore_missing_imports = true
 no_implicit_optional = true