Lv.1_문자열 내 p와 y의 개수

https://school.programmers.co.kr/learn/courses/30/lessons/12916

프로그래머스

def solution(s):
    word_list = list(s)
    number_p = 0
    number_y = 0
    
    for word in word_list:
        if word.upper() == 'P':
            number_p += 1
        elif word.upper() == 'Y':
            number_y += 1
        
    if number_p == number_y:
        answer = True
    else:
        answer = False
        
    return answer