diff -r 815b88454e3e Lib/glob.py
--- a/Lib/glob.py	Fri Aug 31 17:14:31 2012 -0400
+++ b/Lib/glob.py	Sun Sep 02 03:10:30 2012 +0100
@@ -60,7 +60,7 @@
     return fnmatch.filter(names, pattern)
 
 def glob0(dirname, basename):
-    if basename == '':
+    if len(basename) == 0:
         # `os.path.split()` returns an empty basename for paths ending with a
         # directory separator.  'q*x/' should match only directories.
         if os.path.isdir(dirname):
diff -r 815b88454e3e Lib/os.py
--- a/Lib/os.py	Fri Aug 31 17:14:31 2012 -0400
+++ b/Lib/os.py	Sun Sep 02 03:10:30 2012 +0100
@@ -260,7 +260,10 @@
             # be happy if someone already created the path
             if e.errno != errno.EEXIST:
                 raise
-        if tail == curdir:           # xxx/newdir/. exists if xxx/newdir exists
+        cdir = curdir
+        if isinstance(tail, bytes):
+            cdir = bytes(curdir, 'ASCII')
+        if tail == cdir:           # xxx/newdir/. exists if xxx/newdir exists
             return
     try:
         mkdir(name, mode)