https://school.programmers.co.kr/learn/courses/30/lessons/120908?language=python3
만약 str1에 str2가 포함한다면 1을 출력해야하므로 if str2 in str1 을 사용한다.
def solution(str1, str2):
answer = 0
if str2 in str1:
answer = 1
else:
answer = 2
return answer
def solution(str1, str2):
if str1.count(str2):
return 1
else:
return 2