日落沧海看夕阳,万丈霞光谱辉煌。轻叹美景难留住,只因月色要锋芒!你在桥上看风景,看风景的人在桥下看你。你只知道自己吃了韭菜盒子,却不知道别人在盒子里还加了鸡蛋。
Python身份运算符
身份运算符用于比较两个对象的存储单元
以下实例演示了Python所有身份运算符的操作:
#!/usr/bin/python a = 20 b = 20 if ( a is b ): print "Line 1 - a and b have same identity" else: print "Line 1 - a and b do not have same identity" if ( id(a) == id(b) ): print "Line 2 - a and b have same identity" else: print "Line 2 - a and b do not have same identity" b = 30 if ( a is b ): print "Line 3 - a and b have same identity" else: print "Line 3 - a and b do not have same identity" if ( a is not b ): print "Line 4 - a and b do not have same identity" else: print "Line 4 - a and b have same identity"
以上实例输出结果:
Line 1 - a and b have same identity Line 2 - a and b have same identity Line 3 - a and b do not have same identity Line 4 - a and b do not have same identity
到此这篇关于举例讲解Python中的身份运算符的使用方法就介绍到这了。当你感到悲哀痛苦时,最好是去学些什么东西。学习会使你永远立于不败之地。更多相关举例讲解Python中的身份运算符的使用方法内容请查看相关栏目,小编编辑不易,再次感谢大家的支持!