无法逃脱字符串中的转义字符 [英] Can't escape escape characters in string

问题描述

试图回答这个问题，我设法通过转义反斜杠将字符串转到 print 转义字符。

In an attempt to answer this question, I managed to get the string to print the escape characters by escaping the backslash.

当我尝试将其概括为逃避所有转义的字符时，似乎什么都不做：

When I try to generalize it to escape all escaped characters, it seems to do nothing:

>>> a = "word\nanother word\n\tthird word"
>>> a
'word\nanother word\n\tthird word'
>>> print a
word
another word
        third word
>>> b = a.replace("\\", "\\\\")
>>> b
'word\nanother word\n\tthird word'
>>> print b
word
another word
        third word

但是相同的方法对于特定的转义字符，它可以正常工作：

but this same method for specific escape characters, it does work:

>>> b = a.replace('\n', '\\n')
>>> print b
word\nanother word\n    third word
>>> b
'word\\nanother word\\n\tthird word'

<有没有一个一般的方法来实现这一点？应包括 \\\
， \t ， \r 等。

推荐答案

使用r'text定义您的字符串为raw，如下面的代码：

Define your string as raw using r'text', like in the code below:

a = r"word\nanother word\n\tthird word"
print(a)
word\nanother word\n\tthird word

b = "word\nanother word\n\tthird word"
print(b)
word
another word
        third word

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