From: Raymond Hettinger <python@rcn.com>
Date: Wed, 14 Nov 2007 22:56:16 +0000 (+0000)
Subject: Make __fields__ read-only.  Suggested by Issac Morland
X-Git-Tag: v2.6a1~1057
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=78f27e001b5099fee2139afedb2f0992c7022be8;p=python

Make __fields__ read-only.  Suggested by Issac Morland
---

diff --git a/Lib/collections.py b/Lib/collections.py
index e0782d03ef..40f5187bce 100644
--- a/Lib/collections.py
+++ b/Lib/collections.py
@@ -54,7 +54,7 @@ def namedtuple(typename, field_names, verbose=False):
     template = '''class %(typename)s(tuple):
         '%(typename)s(%(argtxt)s)'
         __slots__ = ()
-        __fields__ = %(field_names)r
+        __fields__ = property(lambda self: %(field_names)r)
         def __new__(cls, %(argtxt)s):
             return tuple.__new__(cls, (%(argtxt)s))
         def __repr__(self):