slice()
slice() is built into Python. You do not import it. Freshers only need one honest call and the printed result — not a long definition.
slice() — output — [20, 30]. slice(1,3) same as [1:3].
Wrong type often raises TypeError. Empty values matter for bool/all/any. Don’t mix slice up with a similar name (sorted vs sort, int vs float).
Exam tip
Call slice() once and say what prints.