我如何将'\xff\xfe'转义为可读字符串 [英] how can i escape '\xff\xfe' to a readable string

问题描述

我在这段代码中看到一个字符串：

i see a string in this code:

data[:2] == '\xff\xfe'

我不知道'\xff\xfe'是什么，

i don't know what '\xff\xfe' is,

所以我想逃避它，但不成功

so i want to escape it ,but not successful

import cgi
print cgi.escape('\xff\xfe')#print \xff\xfe

我如何得到它。

谢谢

推荐答案

你不能您应该明白，您正在使用字符串和不是字节流，而是

You cannot escape or encode an invalid string.

有一些你不能接受的字符，其中首先是 0x00 - 而且你的例子是一个 BOM 序列。

You should understand that you are working with strings and not byte streams and there are some characters you cannot accept in them, first of them being 0x00 - and also your example that is happening to be a BOM sequence.

所以如果你需要包含非有效的字符串字符（unicode或ascii）你将不得不停止使用字符串。

So if you need to include non-valid strings characters (unicode or ascii) you will have to stop using strings for this.

看看 PEP-0358

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