[プログラマ]数字文字列とアルファベット語

import re
def solution(s):
    dic={'zero':'0','one':'1','two':'2','three':'3','four':'4','five':'5','six':'6','seven':'7','eight':'8','nine':'9'}
    
    for i,j in dic.items():
        if i in s:
            s=re.sub(i,j,s)
    
    return int(s)