Trivial fix to the pep277 checkin: ensure that exceptions always have a filename attribute (previously did only when string filenames were passed, but not when unicode)
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 494ca61..ab18cbb 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -560,7 +560,7 @@
 			res = (*wfunc)(PyUnicode_AS_UNICODE(po));
 			Py_END_ALLOW_THREADS
 			if (res < 0)
-				return posix_error();
+				return posix_error_with_unicode_filename(PyUnicode_AS_UNICODE(po));
 			Py_INCREF(Py_None);
 			return Py_None;
 		}