树叶有花

摘要： 1. name = "alex" print(id(name)) li = [1,2,3] print(id(li)) 2.is判断的是内存地址 name1 = "alex@" name2 = "alex@" print(name1 == name2) print(name1 is name2) 在pycharm里面2个结果都是True在python小黑框里,print(name1 is n... 阅读全文