ํ์ด ํ๋ณดํค๋ฅผ ๋ง๋ค์ด์ ์ค๋ณต์ด ์๋์ง ์ฒดํฌํ๋ ๋ฌธ์ . ์กฐํฉ๋ง๋๋ ๊ฑด for๋ฌธ์... for๋ฌธ ๋ง๊ณ ์ข ํธํ๊ฑฐ ์๋? ์กฐํฉ ๋ง๋ค์ด์ผ ๋๋ค. 4+3+2+1... ์! 1์ ํ์์๋ค. ๋ค ๋ค์ด์๋๊ฑฐ๋ผ์... 4+3+2 ๊ทธ๋ฆฌ๊ณ ์ค๋ณต ์ฒดํฌ๋ ์นด์ดํฐ ์ฐ๋ฉด ๋ ๋ฏ? ์๋๋ ์ข ํฌ๊ธฐํ๊ณ ํธํ๊ฒ ๊ฐ์... ๋ญ ์จ์ผํ๋? ์ผ๋จ itertools๊ฐ ์๊ฐ๋ฌ๋ค. https://docs.python.org/ko/3/library/itertools.html itertools — Functions creating iterators for efficient looping This module implements a number of iterator building blocks inspired by constructs from APL,..