如何在python中以UTF-8样式编写和编码文件？

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import io

def write_ngrams(table, filename):

    with io.open(filename, "w") as file:
        for i in table:
            outputstring=(('%d %s\n' % (table[i], i)))
            encoded = outputstring.encode("utf-8")
            file.write(encoded)

tabel = ngram_table('hiep, hiep, hoera!', 3, 0) // these are not really interesting for now

write_ngrams(tabel, "testfile3.txt")

我在file.write（encoded）行出现错误，指出以下内容：

TypeError: write() argument must be str, not bytes.

但是我的任务是：输出必须使用utf8编码，

这意味着输出应为b'....'的形式

用我尝试过的方法，我只能得到没有编码或错误的字符串。但是，当我使用print（encoded）时，我确实收到了UTF-8编码的输出，但是当我将其写入文件时，编码消失了，或者出现了错误。

任何提示将不胜感激。

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dquis
dquis

You can pass the string to write() & open the file with the encoding set to utf-8

import io

def write_ngrams(table, filename):

    with io.open(filename, "w", encoding='utf-8') as file:
        for i in table:
            outputstring=(('%d %s\n' % (table[i], i)))
            file.write(outputstring)

tabel = ngram_table('hiep, hiep, hoera!', 3, 0) // these are not really interesting for now

write_ngrams(tabel, "testfile3.txt")
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