Conceptual Python for Java Developers: From Streams to Tensors
Part 3: "Functions Are Values" — Arguments, Closures and Decorators
No more single-method interfaces. Positional, keyword, *args and **kwargs; the mutable-default trap; lambdas; closures and LEGB scoping; and decorators — Python's ten-line answer to Spring AOP — for timing, retries and caching.