From: Raymond Hettinger <python@rcn.com>
Date: Thu, 29 Aug 2002 15:13:50 +0000 (+0000)
Subject: Sped _update().
X-Git-Tag: v2.3c1~4261
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=1a8d19312107e83fff0dd141a432c5e5c9e7504a;p=thirdparty%2FPython%2Fcpython.git

Sped _update().
Uses the fast update() method when a dictionary is available.
---

diff --git a/Lib/sets.py b/Lib/sets.py
index 5007709979eb..069be64a7df5 100644
--- a/Lib/sets.py
+++ b/Lib/sets.py
@@ -310,6 +310,15 @@ class BaseSet(object):
     def _update(self, iterable):
         # The main loop for update() and the subclass __init__() methods.
         data = self._data
+
+        # Use the fast update() method when a dictionary is available.
+        if isinstance(iterable, BaseSet):
+            data.update(iterable._data)
+            return
+        if isinstance(iterable, dict):
+            data.update(iterable)
+            return
+
         value = True
         it = iter(iterable)
         while True: