python文件写入显示UnicodeEncodeError的错误

Question

I need to make the cp932 (it is expanded shift-jis )

UnicodeEncodeError: 'cp932' codec can't encode character '\✌' in position 0: illegal multibyte sequence

    import codecs
    mytext = '\u270c'
    with codecs.open(path,mode='w',encoding='cp932') as f:
        mytext.encode('cp932',"ignore")
        f.write(mytext)
    exit()

I just simplify the mytext for this article.

I think this character pass the encode with ignore flg.

However, write shows the error.

Is there any way to solve this??

Answer 1

\\ is functional symbol in cp932. So, If you want to encode \\ you should use the \\\\
in your case :

import codecs
mytext = '\\u270c'
with codecs.open(path,mode='w',encoding='cp932') as f:
    mytext.encode('cp932',"ignore")
    f.write(mytext)
exit()

Answer 2

In your example, the file f will expect Unicode strings to be passed to f.write() and they will be encoded as declared by codecs.open , so the code is trying to double-encode. Also, '\✌' is not a character supported by CP932, so it can't be written to a CP932 file in any case.

Assuming Python 3, to write a Unicode string text in a particular encoding, use:

with open('output.txt','w',encoding='cp932') as f:
    f.write(text)

codecs is an older module and isn't needed. In Python 2, io.open is the backported equivalent to Python 3's open and is also supported by Python 3, for portability.