합집합
a|b
= a.union(b)
교집합
a&b
a.intersection(b)
리스트를 딕셔너리로 만들기
fromkeys() 사용하기!!!
number = [99, 93, 98]
a = dict.fromkeys(number)
print(a) >>> {99:None,93:None,98:None}
a = dict.fromkeys(number,2020)
print(a) >> {99:2020,93:2020,98:2020}
back-end 개발자
a|b
= a.union(b)
a&b
a.intersection(b)
fromkeys() 사용하기!!!
number = [99, 93, 98]
a = dict.fromkeys(number)
print(a) >>> {99:None,93:None,98:None}
a = dict.fromkeys(number,2020)
print(a) >> {99:2020,93:2020,98:2020}