UnicodeDecodeError：“ utf8”编解码器无法解码位置3的字节0xa3：无效的起始字节 [英] UnicodeDecodeError: 'utf8' codec can't decode byte 0xa3 in position 3: invalid start byte

问题描述

我正在使用 repl.it Python Web IDE，但我真的无法解决问题。

I am using repl.it Python web IDE, and I really can't solve a problem with it.

我试图解码一个字符串，但是似乎没有办法。

I was trying to decode a string, but it seems that there's no way to do it.

import base64

ciphertext = 'FxM7o1wl/7wE9CHPNzbB944feDFXbTSVaJfaLsUMzH5EP4xZRz7Sq8O3y7+jPbXIMVRxpvJZZm7ugqQ4fwpJwtvnB0/BoU+hhGeEZZZ0fFj1irm/zg3bsxOoxBJx4B3U'

ciphertext = base64.b64decode(ciphertext)

print ciphertext

UnicodeDecodeError：'utf8'编解码器无法解码位置3的字节0xa3起始字节

UnicodeDecodeError: 'utf8' codec can't decode byte 0xa3 in position 3: invalid start byte

推荐答案

您不能 print 密文，因为它是一个无意义的二进制字节序列，所以不是一个文本（我检查过）。

You cannot print ciphertext, since it is a sequence of nonsensical binary bytes, not a text at all (I checked).

您的终端假设您打印某些内容，则该内容为UTF8；而则不是。因此出现错误。如果您的密文为 VGhpcyB3aWxsIGJlIHByaW50ZWQuCg == ，那么它将毫无问题地打印出来，因为它会解码为有效的UTF-8（实际上是有效的ASCII-7）。

Your terminal is assuming that if you print something, that something is UTF8; and it is not. Hence the error. If you had a ciphertext of VGhpcyB3aWxsIGJlIHByaW50ZWQuCg==, that would be printed without problems, since it decodes to valid UTF-8 (valid ASCII-7 actually).

如果要显示密文，可以将非UTF8字符替换为空格，也可以将密文打印为十六进制。

If you want to display the ciphertext, you can replace non-UTF8 characters with spaces, or you can print the ciphertext as hex.

但是，实际上，您真正应该做的是在打印之前对其进行解密（另外，在完成处理后，请确认它是UTF8文本，而不是用ISO-8859-15或其他字符集进行编码。是的，您可以使用适当的编解码器； 此答案还提供了有关字符集的有用信息。

But, actually, what you should really do is decrypt it before printing (also, when you've done it, verify it is a UTF8 text and not, say, encoded in ISO-8859-15 or other charsets. If it is, you can use the appropriate codec; this answer also supplies useful information on charsets).

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