프로그래머스)시저 암호-python

https://school.programmers.co.kr/learn/courses/30/lessons/12926#

프로그래머스

 

def solution(s, n):
    answer = ''
    
    for i in s:
        isLower = False
        if i == ' ':
            answer += ' '
        
        else:
            if i.isupper():
                i=i.lower()
                isLower = True
            
            num = int(ord(i))
            num = num + n
            if num > 122:
                num = 96 + (num - 122)
            alpha = chr(num)
            if isLower:
                alpha=alpha.upper()
            answer += alpha
            
    
    return answer