diff -r aeb3faaf4754 Lib/tempfile.py
--- a/Lib/tempfile.py	Mon Sep 02 17:01:10 2013 -0700
+++ b/Lib/tempfile.py	Tue Sep 03 13:16:09 2013 +0400
@@ -199,6 +199,13 @@
             return (fd, _os.path.abspath(file))
         except FileExistsError:
             continue    # try again
+        except PermissionError:
+            # This exception is thrown when directory with chosen name
+            # already exists on windows.
+            if _os.name == 'nt':
+                continue
+            else:
+                raise
 
     raise FileExistsError(_errno.EEXIST,
                           "No usable temporary file name found")