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pydata · Jan 21, 2024 · 2abdbab · 2abdbab
1 parent 53e9aad
commit 2abdbab
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/xarray/core/utils.py b/xarray/core/utils.py
@@ -1248,7 +1248,12 @@ def find_stack_level(test_mode=False) -> int:
     pkg_dir = Path(xr.__file__).parent
     test_dir = pkg_dir / "tests"
 
-    std_lib_dir = Path(sys.modules["os"].__file__).parent  # Standard library path
+    std_lib_path = sys.modules["os"].__file__
+    # Mostly to appease mypy; I don't think this can happen...
+    if std_lib_path is None:
+        return 0
+
+    std_lib_dir = Path(std_lib_path).parent  # Standard library path
 
     frame = inspect.currentframe()
     n = 0