1 intpy2 (long)py3 (int)
2 boolFalse: 0 None
3 strupper/lowerisdigitstartswith/endswithjoinsplitstrip
5 列表增insertappend删removepopdel
6 元组
7 字典keysvaluesitems
8 集合set{}
公共功能len索引切边步长for循环
9嵌套