diff --git a/py-polars/tests/unit/test_polars_import.py b/py-polars/tests/unit/test_polars_import.py
index 51beee946e93..0b5d794e93d3 100644
--- a/py-polars/tests/unit/test_polars_import.py
+++ b/py-polars/tests/unit/test_polars_import.py
@@ -16,7 +16,7 @@
 MAX_ALLOWED_IMPORT_TIME = 200_000  # << microseconds
 
 
-def _import_time_from_frame(tm: pl.DataFrame) -> int:
+def _import_time_from_frame(tm: pl.DataFrame) -> int:  # pragma: no cover
     return int(
         tm.filter(pl.col("import").str.strip_chars() == "polars")
         .select("cumulative_time")
@@ -24,7 +24,7 @@ def _import_time_from_frame(tm: pl.DataFrame) -> int:
     )
 
 
-def _import_timings() -> bytes:
+def _import_timings() -> bytes:  # pragma: no cover
     # assemble suitable command to get polars module import timing;
     # run in a separate process to ensure clean timing results.
     cmd = f'{sys.executable} -X importtime -c "import polars"'
@@ -35,7 +35,9 @@ def _import_timings() -> bytes:
     )
 
 
-def _import_timings_as_frame(n_tries: int) -> tuple[pl.DataFrame, int]:
+def _import_timings_as_frame(  # pragma: no cover
+    n_tries: int,
+) -> tuple[pl.DataFrame, int]:
     import_timings = []
     for _ in range(n_tries):
         df_import = (
@@ -68,7 +70,7 @@ def _import_timings_as_frame(n_tries: int) -> tuple[pl.DataFrame, int]:
 
 @pytest.mark.skipif(sys.platform == "win32", reason="Unreliable on Windows")
 @pytest.mark.slow()
-def test_polars_import() -> None:
+def test_polars_import() -> None:  # pragma: no cover
     # up-front compile '.py' -> '.pyc' before timing
     polars_path = Path(pl.__file__).parent
     compileall.compile_dir(polars_path, quiet=1)