Mercurial > public > mercurial-scm > hg-stable

diff mercurial/util.py @ 14942:5b072d4b62f2

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safehasattr: new function to work around hasattr being broken
author Augie Fackler <durin42@gmail.com>
date Mon, 25 Jul 2011 14:59:55 -0500
parents 2aa3e07b2f07
children b7dbe957585c
line wrap: on
line diff
--- a/mercurial/util.py	Mon Jul 25 16:14:02 2011 -0500
+++ b/mercurial/util.py	Mon Jul 25 14:59:55 2011 -0500
@@ -75,6 +75,10 @@
 def sha1(s):
     return _fastsha1(s)
 
+_notset = object()
+def safehasattr(thing, attr):
+    return getattr(thing, attr, _notset) is not _notset
+
 def _fastsha1(s):
     # This function will import sha1 from hashlib or sha (whichever is
     # available) and overwrite itself with it on the first call.