Python3中的单例模式示例

tuntun · tuntun · commit d385323056d1 · 2015-11-24T15:02:24.000+08:00
diff --git a/singleton.py b/singleton.py
@@ -0,0 +1,15 @@
+# encoding:utf-8
+
+# -*- Python&#21333;&#20363;&#27169;&#24335;&#31034;&#20363; -*-
+
+class Singleton(object):
+    def __new__(cls):
+        if not hasattr(cls, 'instance'):
+            cls.instance = super(Singleton, cls).__new__(cls)
+        return cls.instance
+
+if __name__ == '__main__':
+    a = Singleton() 
+    b = Singleton() 
+    print(id(a))
+    print(id(b))
