Python“string_escape” vs“unicode_escape” [英] Python "string_escape" vs "unicode_escape"

问题描述

根据文档，内置字符串编码 string_escape ：

生成适合作为Python源代码中的字符串字符串的字符串

...而 unicode_escape ：

在Python源代码中生成适合Unicode字符串的字符串

$ b $所以，他们应该有大致相同的行为。但是，他们似乎以不同的方式处理单引号：

 >>>在$$之后的\\之前打印。$之前的$$$ \\在之前的'\0之前打印。在
   
 
 
  c $ c> string_escape 转义单引号，而Unicode一个则不转义。假设我可以简单的说是安全的：
 >>> escaped = my_string.encode（'unicode-escape'）。replace（'，\\）
  
 ...并获得预期的行为？
 
 
 
 编辑：只是为了超清楚，预期的行为正在获得
解决方案
根据我对 unicode-escape 和CPIX 2.6.5源中的unicode  repr 是的;  repr（unicode_string）和 unicode_string.encode（'unicode-escape'）之间的唯一区别是包含包装引用和转义使用了哪个报价。
 
 
 
它们都由同一个函数驱动， unicodeescape_string 。此函数采用一个参数，其唯一功能是切换添加引号和转义该引号。
 
According to the docs, the builtin string encoding string_escape:

  
Produce[s] a string that is suitable as string literal in Python source code
...while the unicode_escape:

  
Produce[s] a string that is suitable as Unicode literal in Python source code
So, they should have roughly the same behaviour. BUT, they appear to treat single quotes differently:
>>> print """before '" \0 after""".encode('string-escape')
before \'" \x00 after
>>> print """before '" \0 after""".encode('unicode-escape')
before '" \x00 after
The string_escape escapes the single quote while the Unicode one does not. Is it safe to assume that I can simply:
>>> escaped = my_string.encode('unicode-escape').replace("'", "\\'")
...and get the expected behaviour?

Edit: Just to be super clear, the expected behavior is getting something suitable as a literal.
解决方案
According to my interpretation of the implementation of unicode-escape and the unicode repr in the CPython 2.6.5 source, yes; the only difference between repr(unicode_string) and unicode_string.encode('unicode-escape') is the inclusion of wrapping quotes and escaping whichever quote was used.

They are both driven by the same function, unicodeescape_string. This function takes a parameter whose sole function is to toggle the addition of the wrapping quotes and escaping of that quote.

                        
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