Iterate Me

easypy_basics

A warm-up of nine small list functions — solve each without a for/while loop (use comprehensions, slicing, and builtins):

get_squares(elements) — the squares.
get_indices_from_one(elements) — [1, 2, ..., len].
get_max_element_index(elements) — index of the max (None if empty).
get_every_second_element(elements) — every second element from index 1.
get_first_three_index(elements) / get_last_three_index(elements) — index of the first / last 3 (None if absent).
get_sum(elements) — the sum.
get_min_max(elements, default) — (min, max), or (default, default) if empty.
get_by_index(elements, i, boundary) — elements[i] if it exceeds boundary, else None.

Constraints

Your solution

Edit get_squares and run the real pytest suite in your browser — no install required. Your code is saved locally.

Loading the Python runtime (first run only)…

Hint 1

No explicit loops — reach for comprehensions, slicing, and builtins (range, len, sum, min, max, list.index).

Hint 2

get_last_three_index: search the reversed list and convert the index; get_by_index reads nicely with a walrus (:=).