This is broadly true across language. In Java, it was Collections, List, Elixir it's Enum, Python is your mentioned stdlib namespaces. Knowing your collection-e

This is broadly true across language. In Java, it was Collections, List, Elixir it's Enum, Python is your mentioned stdlib namespaces. Knowing your collection-ey stdlib functions will only help your code be more idiomatic and likely performant.