python - 是否可以使用 maketrans 将一个字符替换为两个字符？

Question

我想用 ae 替换 æ 字符。我怎样才能获得它？这是我对 maketrans 和 translate 的尝试:

word = 'være'
letters = ('å','ø', 'æ')
replacements = ('a','o','ae')

table = word.maketrans(letters, replacements)
#table = word.maketrans(''.join(letters),''.join(replacements))
word_translated = word.translate(table)
print(word_translated)

它会产生错误:

TypeError: maketrans() argument 2 must be str, not tuple
ValueError: the first two maketrans arguments must have equal length

Answer 1

是的，这是可能的。您需要提供一个 dict 作为 maketrans() 的参数。如 the docs 中所述

If there is only one argument, it must be a dictionary mapping Unicode ordinals (integers) or characters (strings of length 1) to Unicode ordinals, strings (of arbitrary lengths) or None. Character keys will then be converted to ordinals.

word = 'være'
letters = ('å','ø', 'æ')
replacements = ('a','o','ae')

table = word.maketrans(dict(zip(letters, replacements)))
word_translated = word.translate(table)
print(word_translated)

输出

vaere