diff -r 9332a545ad85 Lib/tarfile.py
--- a/Lib/tarfile.py	Thu Mar 12 22:01:30 2015 +0200
+++ b/Lib/tarfile.py	Thu Mar 12 16:58:09 2015 -0500
@@ -2087,10 +2087,10 @@
 
         # Create all upper directories.
         upperdirs = os.path.dirname(targetpath)
-        if upperdirs and not os.path.exists(upperdirs):
+        if upperdirs:
             # Create directories that are not part of the archive with
             # default permissions.
-            os.makedirs(upperdirs)
+            os.makedirs(upperdirs, exist_ok = True)
 
         if tarinfo.islnk() or tarinfo.issym():
             self._dbg(1, "%s -> %s" % (tarinfo.name, tarinfo.linkname))