摘要： 变量的交换 解释 a = "hello" b = "world" 交换a和b的值 预期结果：a = "world" b = "hello" ` 方式一：python特性a,b交换 a = "hello" b = "world" a,b = b,a print("交换后的a：%s" %a) print 阅读全文