如何从字节对象中删除双反斜杠(`\\`)? [英] How do I remove double back slash (`\\`) from a bytes object?

问题描述

例如:

t = str.encode(msg)

print(t)

我得到双斜杠，就像这样:

I am getting double slashes, like this:

b'\\xda\\xad\\x94\\xb4\\x0bg\\x92]R\\x9a1y\\x9d\\xed\\x04\\xd5\\x8e+\\x07\\xf8\\x03\\x1bm\\xd6\\x96\\x10\\xca80\\xe26\\x8a

但是，我想得到的结果是:

But, I would like to get the result as:

b'\xda\xad\x94\xb4\x0bg\x92]R\x9a1y\x9d\xed\x04\xd5\x8e+\x07\xf8\x03\x1bm\xd6\x96\x10\xca80\xe26\x8a'

任何帮助将不胜感激.

推荐答案

有多种编码选项可以帮助您获得所需的内容.下面，我进行编码和解码以获得所需的结果:

There are different encoding options that can help you get what you want. Below I encode and decode to get the desired result:

from codecs import encode
    
# I have the string shortened for presentation
your_string = "\\xda\\xad\\x94"

encode(your_string.encode().decode('unicode_escape'),"raw_unicode_escape")

现在，如果您有未转义的字符串，那就更好了:

Now if you have an unescaped string it's even better:

from codecs import encode

your_string = "\xda\xad\x94"

encode(your_string, "raw_unicode_escape")

这些都产生一个值字节:

These both yield a byte of value:

b'\xda\xad\x94'

为了进一步说明问题， unicode_escape 编解码器在解码时会删除转义符，而 raw_unicode_escape 编解码器在编码时不会在字节常量中转义反斜杠.因此，当处理字节文字中的转义字符时，这两种编解码器都派上用场.

To further explain things, the unicode_escape codec removes escapes when decoding, and the raw_unicode_escape codec does not escape backslashes in the byte literals when encoding. So both of these codecs come in handy when handling escape characters in byte literals.

有关编码的更多信息，请参见:
Python 2标准编码
Python 3标准编码

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