摘要：
1. tuples: (3) -> 3 but (3,) indicates a tuple -> (3,) 2. tuples and lists: tuples:num = (1,2,3) (3,) 不可修改 num(1) = 4 -> 'error' can lists:num ... 阅读全文
摘要：
1.http://blog.csdn.net/chr23899/article/details/404006072.http://blog.csdn.net/jelly441/article/details/20575599 阅读全文