tr// とか String.tr 的あれ

string.py

# coding: utf-8
import re

def expand_hyphen(pattern_string):
    def _expand(hyphen):
        start, end = map(ord, hyphen.groups())
        return ''.join(map(chr, range(start, end+1)))
    return re.sub(r'(\S)\-(\S)', _expand, pattern_string)


def tr(s, pattern, replace):
    return s.translate(str.maketrans(expand_hyphen(pattern), expand_hyphen(replace)))