Merged revisions 88498 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r88498 | brett.cannon | 2011-02-21 19:25:12 -0800 (Mon, 21 Feb 2011) | 8 lines

  Issue #11074: Make 'tokenize' so it can be reloaded.

  The module stored away the 'open' object as found in the global namespace
  (which fell through to the built-in namespace) since it defined its own 'open'.
  Problem is that if you reloaded the module it then grabbed the 'open' defined
  in the previous load, leading to code that infinite recursed. Switched to
  simply call builtins.open directly.
........

Lib/tokenize.py

@@ -24,6 +24,7 @@
 __credits__ = ('GvR, ESR, Tim Peters, Thomas Wouters, Fred Drake, '
                'Skip Montanaro, Raymond Hettinger, Trent Nelson, '
                'Michael Foord')
+import builtins
 import re
 import sys
 from token import *
@@ -335,13 +336,11 @@ def find_cookie(line):
     return default, [first, second]
 
 
-_builtin_open = open
-
 def open(filename):
     """Open a file in read only mode using the encoding detected by
     detect_encoding().
     """
-    buffer = _builtin_open(filename, 'rb')
+    buffer = builtins.open(filename, 'rb')
     encoding, lines = detect_encoding(buffer.readline)
     buffer.seek(0)
     text = TextIOWrapper(buffer, encoding, line_buffering=True)

Misc/NEWS

@@ -15,6 +15,8 @@ Core and Builtins
 Library
 -------
 
+- Issue #11074: Make 'tokenize' so it can be reloaded.
+
 - Issue #4681: Allow mmap() to work on file sizes and offsets larger than
   4GB, even on 32-bit builds.  Initial patch by Ross Lagerwall, adapted for
   32-bit Windows.