mypy: unconditionally ignore os.add_dll_directory()

If OpenSlide Python is type-checked on Windows, os.add_dll_directory()
will exist and mypy will complain.  Add an extra ignore to fix this.  Mypy
understands conditionalizing on sys.platform but not on os.name, and we
want the latter because it exactly corresponds to whether the function
exists.

Signed-off-by: Benjamin Gilbert <[email protected]>

Author: bgilbert

examples/deepzoom/deepzoom_multiserver.py

@@ -42,7 +42,7 @@
 if os.name == 'nt':
     _dll_path = os.getenv('OPENSLIDE_PATH')
     if _dll_path is not None:
-        with os.add_dll_directory(_dll_path):  # type: ignore[attr-defined]
+        with os.add_dll_directory(_dll_path):  # type: ignore[attr-defined,unused-ignore]  # noqa: E501
             import openslide
     else:
         import openslide

examples/deepzoom/deepzoom_server.py

@@ -42,7 +42,7 @@
 if os.name == 'nt':
     _dll_path = os.getenv('OPENSLIDE_PATH')
     if _dll_path is not None:
-        with os.add_dll_directory(_dll_path):  # type: ignore[attr-defined]
+        with os.add_dll_directory(_dll_path):  # type: ignore[attr-defined,unused-ignore]  # noqa: E501
             import openslide
     else:
         import openslide

examples/deepzoom/deepzoom_tile.py

@@ -48,7 +48,7 @@
 if os.name == 'nt':
     _dll_path = os.getenv('OPENSLIDE_PATH')
     if _dll_path is not None:
-        with os.add_dll_directory(_dll_path):  # type: ignore[attr-defined]
+        with os.add_dll_directory(_dll_path):  # type: ignore[attr-defined,unused-ignore]  # noqa: E501
             import openslide
     else:
         import openslide

tests/common.py

@@ -30,7 +30,7 @@
     # environment.
     _dll_path = os.getenv('OPENSLIDE_PATH')
     if _dll_path is not None:
-        with os.add_dll_directory(_dll_path):  # type: ignore[attr-defined]
+        with os.add_dll_directory(_dll_path):  # type: ignore[attr-defined,unused-ignore]  # noqa: E501
             import openslide  # noqa: F401  module-imported-but-unused