The core of the Python data model architecture is special methods (also known as "magic methods"). These methods, which start ...

Pull requests help you collaborate on code with other people. As pull requests are created, they’ll appear here in a searchable and filterable list. To get started, you should create a pull request ...

Try to choose lists when you need a simple, iterable collection that is modified frequently. Use a set if you need uniqueness for the elements. Use tuples when your data cannot change. Many times, a ...

dict根据key来计算value的存储位置（哈希算法），在Python中，字符串、整数等是不可以变的，而list是可变的，就不能作为key。