Fix: The application now check extra Python versions (3.0, 3.1) to stop invoking. And fix a trivial comment.

sphinx/__init__.py

@@ -42,7 +42,8 @@ if '+' in __version__ or 'pre' in __version__:
 
 def main(argv=sys.argv):
     """Sphinx build "main" command-line entry."""
-    if sys.version_info[:3] < (2, 6, 0):
+    if (sys.version_info[:3] < (2, 6, 0) or
+       (3, 0, 0) <= sys.version_info[:3] < (3, 2, 0)):
         sys.stderr.write('Error: Sphinx requires at least Python 2.6 to run.\n')
         return 1
     try:

sphinx/util/osutil.py

@@ -69,10 +69,9 @@ def ensuredir(path):
             raise
 
 
-# TODO: This function can be removed because this function is same as os.walk
-# of Python2.6, 2.7, 3.2, 3.3.
-# HOWEVER, this function is customized to check UnicodeError that obstacle to
-# replace the function with the os.walk.
+# This function is same as os.walk of Python2.6, 2.7, 3.2, 3.3 except a
+# customization that check UnicodeError.
+# The customization obstacle to replace the function with the os.walk.
 def walk(top, topdown=True, followlinks=False):
     """Backport of os.walk from 2.6, where the *followlinks* argument was
     added.