Python dictionaries consists of one or more keys ... Also, sets don’t preserve insertion order, as the code they use isn’t the same as the code used to create dictionaries.

What Does Pythonic Mean? Every programming language has its own quirks and conventions—ways of doing things that feel natural ...

For instance, this code would be invalid: Python type-checking systems will ... Because objects like lists, dictionaries, and tuples contain other objects, we sometimes want to type hint them ...