如何使用.combinations()替换字符串中的多个字符？

import itertools

# 定义原始字符串
original_string = "abc"

# 创建替换字典
replace_dict = {'a': 'x', 'b': 'y', 'c': 'z'}

# 获取所有可能的字符组合并替换
for i in range(1, len(original_string) + 1):
    combinations = itertools.combinations(original_string, i)
    for combination in combinations:
        new_string = original_string
        for char in combination:
            new_string = new_string.replace(char, replace_dict[char])
        print(new_string)