From: Jason Kirtland <jek@discorporate.us>
Date: Wed, 14 Nov 2007 22:46:14 +0000 (+0000)
Subject: Restored Python 2.3 compatibility (in IdentitySet)
X-Git-Tag: rel_0_4_1~22
X-Git-Url: http://git.ipfire.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=d5da9a56bc0759fd8c6b3ed9732ca6f28f6dcfb4;p=thirdparty%2Fsqlalchemy%2Fsqlalchemy.git

Restored Python 2.3 compatibility (in IdentitySet)
---

diff --git a/lib/sqlalchemy/util.py b/lib/sqlalchemy/util.py
index e8c34b513e..1fee4cef0a 100644
--- a/lib/sqlalchemy/util.py
+++ b/lib/sqlalchemy/util.py
@@ -511,7 +511,7 @@ class IdentitySet(object):
     """
 
     def __init__(self, iterable=None):
-        self._members = {}
+        self._members = _IterableUpdatableDict()
         if iterable:
             for o in iterable:
                 self.add(o)
@@ -702,6 +702,19 @@ class IdentitySet(object):
     def __repr__(self):
         return '%s(%r)' % (type(self).__name__, self._members.values())
 
+if sys.version_info >= (2, 4):
+    _IterableUpdatableDict = dict
+else:
+    class _IterableUpdatableDict(dict):
+        """A dict that can update(iterable) like Python 2.4+'s dict."""
+        def update(self, __iterable=None, **kw):
+            if __iterable is not None:
+                if not isinstance(__iterable, dict):
+                    __iterable = dict(__iterable)
+                dict.update(self, __iterable)
+            if kw:
+                dict.update(self, **kw)
+
 def _iter_id(iterable):
     """Generator: ((id(o), o) for o in iterable)."""
     for item in iterable: