When a comprehension is passed straight into a function like sum, max, any or all, you can leave out the square brackets. The result is a generator expression: it produces values one at a time without building a whole list first.

numbers = [3, 8, 1, 12, 7]
print(sum(n * n for n in numbers))
print(max(len(w) for w in ["sky", "elephant", "cat"]))
print(any(n > 10 for n in numbers))
print(all(n > 0 for n in numbers))

any is True if at least one value is true; all is True only if every value is. Together with a generator expression they answer "does anything...?" and "does everything...?" questions in one line.