Fix linter

tests/test_dir_traversal.py

@@ -4,7 +4,6 @@
 from abc import ABC, abstractmethod
 from dataclasses import dataclass, field
 from pathlib import Path
-import sys
 from typing import Generic, List, Optional, Tuple, TypeVar, Union
 
 import pytest

tests/test_real_projects.py

@@ -173,7 +173,8 @@ def unpacked_project_dir(self, cache: pytest.Cache) -> Path:
 
 @pytest.mark.skipif(
     sys.platform.startswith("win"),
-    reason="Real projects test are not supported on Windows due to the test environment complications.",
+    reason="Real projects test are not supported on Windows"
+    " due to the test environment complications.",
 )
 @pytest.mark.parametrize(
     "project, experiment",

tests/test_types.py

@@ -1,6 +1,7 @@
 """Verify behavior of our basic types."""
 
 import os
+import sys
 from dataclasses import FrozenInstanceError
 from pathlib import Path