1 files changed, 12 insertions, 7 deletions
diff --git a/Lib/test/support/os_helper.py b/Lib/test/support/os_helper.py
index 821a4b1..46ae53a 100644
--- a/Lib/test/support/os_helper.py
+++ b/Lib/test/support/os_helper.py
@@ -10,6 +10,8 @@ import time
 import unittest
 import warnings
 
+from test import support
+
 
 # Filename used for testing
 TESTFN_ASCII = '@test'
@@ -720,13 +722,16 @@ class EnvironmentVarGuard(collections.abc.MutableMapping):
 
 
 try:
-    import ctypes
-    kernel32 = ctypes.WinDLL('kernel32', use_last_error=True)
-
-    ERROR_FILE_NOT_FOUND = 2
-    DDD_REMOVE_DEFINITION = 2
-    DDD_EXACT_MATCH_ON_REMOVE = 4
-    DDD_NO_BROADCAST_SYSTEM = 8
+    if support.MS_WINDOWS:
+        import ctypes
+        kernel32 = ctypes.WinDLL('kernel32', use_last_error=True)
+
+        ERROR_FILE_NOT_FOUND = 2
+        DDD_REMOVE_DEFINITION = 2
+        DDD_EXACT_MATCH_ON_REMOVE = 4
+        DDD_NO_BROADCAST_SYSTEM = 8
+    else:
+        raise AttributeError
 except (ImportError, AttributeError):
     def subst_drive(path):
         raise unittest.SkipTest('ctypes or kernel32 is not available')