순열(permutations)과 조합(combinations)

from itertools import ...

product('ABCD', repeat=2)	AA, AB, AC, AD, BA, BB, BC, BD, CA, CB, CC, CD, DA, DB, DC, DD
permutations('ABCD', 2)	AB, AC, AD, BA, BC, BD, CA, CB, CD, DA, DB, DC
combinations('ABCD', 2)	AB, AC, AD, BC, BD, CD
combinations_with_replacement('ABCD', 2)	AA, AB, AC, AD, BB, BC, BD, CC, CD, DD

 

출력은?

''.join(comb)

 

 

 

reference: https://docs.python.org/ko/3/library/functional.html

함수형 프로그래밍 모듈 — Python 3.11.0 문서