Refer to __builtin__.file, not __builtins__.file
diff --git a/Lib/test/test_inspect.py b/Lib/test/test_inspect.py
index 33e0b0d..c67c23c 100644
--- a/Lib/test/test_inspect.py
+++ b/Lib/test/test_inspect.py
@@ -105,8 +105,9 @@
istest(inspect.ismethod, 'git.argue')
istest(inspect.ismodule, 'mod')
istest(inspect.istraceback, 'tb')
-istest(inspect.isdatadescriptor, '__builtins__.file.closed')
-istest(inspect.isdatadescriptor, '__builtins__.file.softspace')
+import __builtin__
+istest(inspect.isdatadescriptor, '__builtin__.file.closed')
+istest(inspect.isdatadescriptor, '__builtin__.file.softspace')
test(inspect.isroutine(mod.spam), 'isroutine(mod.spam)')
test(inspect.isroutine([].count), 'isroutine([].count)')