숫자 문자열과 영단어

def solution(s):
    answer = s
    
    dic = {"zero":"0", "one":"1", "two":"2", "three":"3", "four":"4", "five":"5", "six":"6", "seven":"7", "eight":"8", "nine":"9"}
    
    for key, value in dic.items():
        answer = answer.replace(key, value)
    
    return int(answer)

https://programmers.co.kr/learn/courses/30/lessons/81301?language=python3