讲解Python中的标识运算符
发布时间:2020-12-16 23:48:49 所属栏目:Python 来源:网络整理
导读:下表列出了所有Python语言支持的标识运算符。 示例: 试试下面的例子就明白了所有Python编程语言提供的标识运算符: #!/usr/bin/pythona = 20b = 20if ( a is b ): print "Line 1 - a and b have same identity"else: print "Line 1 - a and b do not have s
下表列出了所有Python语言支持的标识运算符。 示例: 试试下面的例子就明白了所有Python编程语言提供的标识运算符: #!/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" 当执行上面的程序它会产生以下结果: 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
(编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |