摘要： is与==的区别 a = [1,2,3] b = [1,2,3] a == b ==>True a is b ==>False 数字在-5到256时如： a = 1 b = 1 a is b ==> Trueis判断两个引用是否指向同一对象(地址)，引用比较 a = [1,2,3],b = [1,2 阅读全文